Does Gratitude Journaling Actually Work?

You have probably tried it, or at least thought about it. A notebook by the bed, a list of three things before sleep, the quiet discipline of noticing what is good. Maybe it helped. Maybe it felt forced after a week and you quietly stopped. Maybe you are still not sure whether it did anything at all.

The research has a lot to say about all three of those experiences — and it is more nuanced than the confident advice you will find almost everywhere else.

The effects are real. But they are smaller than most people have been led to believe. Gratitude journaling does not appear to outperform other structured positive activities. The format matters considerably — the simple list that most people picture as "gratitude journaling" may not work at all. And the practice does not work equally across people or cultures.

None of this makes gratitude journaling a bad idea. It makes it a more interesting one. This article goes through what the evidence actually shows, including the findings that rarely make it into popular summaries.

The practical implications are significant — if you want to skip straight to what the research recommends, jump to What this means in practice.

Key findings at a glance

• The overall effect of gratitude journaling on wellbeing is small but real — Hedges' g = 0.15 to 0.19 across the largest meta-analyses
• Against other structured positive activities, the effect is essentially zero (d = −0.03)
• Simple gratitude lists don't beat an active control in a preregistered study of 958 people — narrative writing does
• Benefits work partly by reducing negative language, not by amplifying positive feelings
• The practice shows no significant effect in France, India, Japan, the Netherlands, or the UK
• People who are least naturally grateful benefit most — a ceiling effect
• Benefits can take four or more weeks to appear — one week is not enough to judge

What the research actually shows: the numbers

The most comprehensive review of the evidence is Choi, Cha, McCullough, Coles, and Oishi (2025), published in Proceedings of the National Academy of Sciences. It pooled 145 papers, 727 effect sizes, and 24,804 participants from 28 countries.

The overall effect on wellbeing: Hedges' g = 0.19. After correcting for potential publication bias: g = 0.15.

To put this in context: a g of 0.2 is what researchers conventionally classify as a small effect. It means that if you took two groups of people — one doing gratitude journaling and one not — the average person in the gratitude group would rank at around the 58th percentile of the control group's wellbeing distribution. Better, but not dramatically so.

Breaking this down by outcome type makes the picture more specific:

The effect on negative affect — feeling less anxious, less irritable, less distressed — is close to zero. Gratitude journaling appears to increase positive feelings more reliably than it reduces negative ones.

The study everyone cites — and what it actually found

These numbers come from aggregating decades of research. The study that started the field is still worth understanding in detail, because it is cited everywhere but rarely described accurately.

Robert Emmons and Michael McCullough published "Counting Blessings Versus Burdens" in the Journal of Personality and Social Psychology in 2003. The paper is the primary source for most popular claims about gratitude journaling. It contains three separate studies, and the results are less uniform than popular accounts suggest.

Study 1 (weekly, 9 weeks, N = 192)

The gratitude group reported life as a whole more favourably and showed about 1.5 extra hours of exercise per week compared to the hassles group. However, there were no significant effects on positive or negative affect — the outcomes most people assume the study demonstrated.

Study 2 (daily, 13 days, N = 157)

The gratitude effect on a composite wellbeing measure was larger (d = 0.88 vs the hassles condition). Positive affect improved significantly, and participants offered more emotional support to others. But the exercise effects from Study 1 did not replicate, nor did any effects on physical symptoms or sleep.

Study 3 (clinical sample, N = 65)

Adults with neuromuscular diseases, daily practice for 21 weeks. This is the most compelling study — positive affect improved (d = 0.56), negative affect decreased (d = −0.51), sleep quality and duration improved, and partner/spouse reports corroborated the self-reports. That second-observer corroboration is unusual and strengthens the findings.

The pattern across three studies: different outcomes appeared in different studies, and the most dramatic effects came from the clinical sample with serious illness. No study measured how long effects lasted after stopping.

The six-month claim — and what it actually means

Martin Seligman's team tested five positive psychology exercises in a large internet-based study (N = 577) with follow-ups at 1 week, 1 month, 3 months, and 6 months. The "Three Good Things" condition — writing three things that went well each day along with a causal explanation — showed improvements in happiness and reductions in depressive symptoms that were still present at 6 months.

This is the origin of the claim that gratitude journaling benefits can persist for months. What the study actually found is more specific: benefits at 6 months were contingent on continued practice. Participants who kept doing the exercise after the study ended showed sustained benefits. Those who stopped largely returned to baseline. It is a one-week introduction to a practice, not a one-week cure.

One important replication note: Mongrain and Anselmo-Matthews (2012, N = 344) replicated the happiness effects but did not replicate the depression effects. They also found that a control condition — writing about early childhood memories — produced similar improvements. This raises the question of whether gratitude specifically, or any structured positive writing, drives the benefit.

The finding most popular articles skip entirely

In 2016, Davis and colleagues published a meta-analysis of gratitude interventions in the Journal of Counseling Psychology that is rarely cited in popular writing. It is the most important analysis for honest reporting, because it distinguishes between different types of control conditions — and the results look very different depending on which comparison you use.

Against doing nothing, gratitude journaling helps. Against any other structured positive activity, there is essentially no difference.

This does not make gratitude journaling useless — it makes it one good option among several, not a uniquely effective one. The "active ingredient" may not be gratitude specifically but the general process of structured, intentional positive reflection.

Two further meta-analyses reached the same conclusion. Dickens (2017) found d = 0.03 against positive controls. Kirca and colleagues (2023) found g = 0.06 against bona fide comparisons. Neither was significantly different from zero.

The authors of the Davis et al. analysis concluded that "enthusiasm for gratitude interventions should be tempered." This is not a dismissal of the practice. It is an honest calibration.

Why the format you use matters more than whether you do it

This is the finding with the most direct practical implications — and the one most at odds with standard advice.

Regan, Walsh, and Lyubomirsky (2023) published a preregistered, well-powered study (N = 958 Australian adults) in Affective Science comparing six gratitude conditions over 15 days: social and nonsocial gratitude lists, social and nonsocial gratitude letters, social gratitude essays, and an active control (listing daily activities).

Both social and nonsocial gratitude lists did not differ from the active control on any outcome. Simple listing produced no measurable benefit above tracking daily activities.

Long-form narrative writing — letters and essays — showed significant effects, with effect sizes on elevation, positive affect, gratitude, and life satisfaction ranging from partial r = .08 to .18. Social gratitude letters produced the strongest results.

The practical implication is significant: the format most commonly associated with gratitude journaling — "write five things I'm grateful for" — may not be sufficient. What the evidence supports is narrative writing: describing a specific experience in some depth, explaining why it mattered, what you noticed, what it meant. Not a list, but a short account.

This is consistent with research from Philip Watkins at Eastern Washington University, who has spent two decades studying how gratitude writing works. His findings consistently point to elaborative processing — the depth of cognitive engagement with a specific experience — as the key driver. Lists generate items. Narrative generates engagement.

A counterintuitive finding about how it works

One of the more surprising findings in recent gratitude research concerns the mechanism. If gratitude journaling works by cultivating appreciation, you would expect the key factor to be an increase in positive emotional language over time.

That is not what the evidence shows.

Wong and colleagues (2018) in Psychotherapy Research randomised 293 adults seeking therapy into three conditions: therapy only, therapy plus expressive writing, and therapy plus gratitude letter writing. At both 4 and 12 weeks, the gratitude condition showed significantly better mental health than both comparison conditions.

When the researchers analysed what predicted benefit, the answer was counterintuitive: the decrease in negative emotion words over time — not the increase in positive words — mediated the mental health improvement.

Writing that dropped words like "sad," "worried," "angry," and "hurt" over successive sessions predicted better outcomes, regardless of how positive the writing became. Gratitude writing appears to work partly by shifting attention and language away from distress rather than by amplifying positivity.

One further unusual property: benefits increased over time rather than fading. The gratitude group showed greater improvements at 12 weeks than at 4 weeks — the reverse of the typical decay pattern in brief interventions. People who try gratitude writing for a week and notice little change may simply be stopping too soon.

Most participants in this study did not send their gratitude letters. Writing alone was sufficient.

Who benefits most — and when it might not help

Here is the finding that surprises most people: the practice appears to work best for people who feel least naturally grateful. The Choi et al. (2025) PNAS meta-analysis found that lower dispositional gratitude significantly predicted greater benefit — a ceiling effect. People who already naturally notice and appreciate good things in their lives show minimal improvement from structured practice. If gratitude does not come easily to you, that is not a reason to skip this — it may be the best reason to try it.

Beyond that moderator, three other patterns emerge from the research:

People with at least moderate baseline distress benefit more.

A 2025 JMIR study found a significant medium effect only in participants with at least moderate baseline symptoms — no significant effect in the full low-symptom sample. Froh and colleagues found comparable moderation in adolescents.

Older adults tend to benefit more than undergraduates.

Several meta-analyses have found larger effect sizes in older adults. The likely explanation is motivation: undergraduates often participate for course credit with limited engagement, while adults practising by choice are more invested.

Cultural context matters substantially.

The PNAS 2025 meta-analysis found no significant effect in France, India, Japan, the Netherlands, or the United Kingdom. Seven cultural variables were tested as explanations — none survived correction for multiple comparisons. This remains an honest unknown in the literature.

When gratitude journaling may not be the right tool

Active grief or loss.

Focusing on what you are grateful for during acute grief can feel invalidating — an implicit pressure to move on rather than process. Expressive writing, which engages directly with the emotional content of loss, has a stronger evidence base here.

Clinical depression.

Cregg and Cheavens (2021) found a small effect of gratitude interventions on depression (g = −0.29) but explicitly stated this would not be something they would recommend as a treatment. For clinical depression, the evidence supports cognitive behavioural therapy and other structured interventions considerably more strongly.

When it feels forced.

If writing gratitude entries feels like performing positivity rather than genuinely noticing it, the evidence suggests this reduces benefit. Studies consistently find that motivated, voluntary engagement is a meaningful moderator. Gratitude journaling done out of obligation — because you feel you should be grateful — is less likely to help and may compound negative feelings by surfacing a gap between how grateful you think you should feel and how you actually do.

How often, and what about the health claims?

The most cited frequency finding — that once per week outperforms three times per week — comes from unpublished data and should be held cautiously. A 2023 systematic review found that 90% of studies with daily participation showed benefit versus only 25% of once-weekly studies, which complicates the picture considerably. The more useful heuristic: write with genuine attention rather than out of habit, and if the practice starts feeling mechanical, reduce frequency rather than push through.

On physical health: gratitude journaling is frequently said to improve immune function and lower blood pressure. This is mostly unsupported. The one well-evidenced physical benefit is sleep quality — the gratitude condition in Emmons and McCullough's Study 3 reported sleeping longer and feeling more refreshed, and a systematic review of 19 RCTs found sleep quality improved in 5 of 8 studies that measured it. The broader claims about immune enhancement and blood pressure are extrapolations from limited, poor-quality studies.

Why popular accounts sound more confident than the evidence warrants

Several structural problems in the research base explain the gap between what you read and what the studies actually show:

• The control-group problem. Most early studies compared gratitude journaling to writing about daily hassles — which actively worsens mood. Observed differences partly reflect the negative effects of the comparison, not only the positive effects of gratitude.
• Demand characteristics. Participants in a "gratitude exercise" know what kind of response is expected and may report feeling better partly because they expect to. No study has adequately controlled for this.
• Publication bias. After correcting for publication bias, Davis et al. (2016) found the effect against neutral activity controls dropped from d = 0.14 to d = 0.02 — essentially zero.
• Short follow-ups. No well-designed study has tracked participants beyond about six months. Long-term effects over years are genuinely unknown.

None of these concerns eliminate the evidence for a real effect. They calibrate it.

What this means in practice

The evidence points toward a more specific set of recommendations than "write a gratitude list every day."

Write narratively, not as a list.

A short account of one specific thing — what happened, who was involved, why it mattered, what you noticed — is more likely to produce benefit than five items in a list. This is the finding from Regan et al. (2023) and is consistent with the elaboration-focused mechanism research from Watkins and colleagues.

To make the difference concrete, here is what the two formats look like side by side:

List entry: "Grateful for my friend Sara. Grateful for good weather. Grateful for my health. Grateful for coffee. Grateful for a productive day."

Narrative entry: "Sara called this afternoon out of nowhere — no reason, just checking in. We ended up talking for forty minutes. I kept thinking afterward how rare it is that someone does that. I felt lighter for the rest of the day in a way I hadn't expected. I don't think I tell her enough how much that kind of thing matters."

The list takes thirty seconds and engages nothing. The narrative involves reliving, specificity, and the kind of cognitive elaboration the research consistently identifies as the mechanism behind the effect.

Be specific.

"My colleague spent twenty minutes helping me untangle a problem I'd been stuck on for two days" generates deeper cognitive engagement than "grateful for colleagues." Specificity activates sensory memory, prevents habituation, and is inherently more genuine.

If it feels forced, change the format before you quit.

Voluntary engagement is a consistent moderator in the research. But "forced" often means you are writing a list rather than a narrative — trying a different format is worth attempting before concluding the practice does not work for you.

Less often, more deeply.

Two to three times per week, written with real attention, is better supported than a quick daily list done on autopilot. The hedonic adaptation concern is real: repetition without variety reduces emotional impact.

You do not need to send the letter.

If you try gratitude letters — writing to someone who helped you — the evidence from Wong et al. (2018) suggests writing alone is sufficient. Most participants in that study did not send their letters, yet still benefited.

Give it several weeks.

Benefits emerged at 4 weeks and continued growing at 12 weeks in the Wong et al. study — the opposite of the typical decay pattern. If you try gratitude writing for a week and notice little change, that is not a reliable signal it will not work. The research suggests it may simply be too early to tell.

Gratitude journaling works — modestly, for some people, under certain conditions, in a specific format. It is not the transformative daily habit that popular accounts describe, but a real practice with a small positive effect on wellbeing that has been replicated across dozens of studies and five major meta-analyses.

Against doing nothing, it reliably wins. Against doing other things — acts of kindness, structured reflection, writing about your best possible future — it performs about equally. Its genuine advantage is low friction: no equipment, no training, no cost, almost no time.

If the standard advice has not worked for you, the most likely culprit is format. A list of five things jotted quickly before bed is not what the evidence supports. A short, specific, narrative account of something that genuinely moved you — written two or three times a week, for several weeks — is a different practice. One that the research suggests is worth trying. If you are looking for practical techniques for different kinds of journaling, our guide on how to journal for anxiety covers expressive writing approaches, and our article on whether journaling actually works reviews the broader evidence base across all outcomes. For tips on making any writing practice stick, see our piece on how to start a journaling habit.