What is the Optimal Frequency for Gratitude Journaling?

“If you do gratitude writing more often, you get worse results.”

That is a first-glance conclusion from a 2005 paper by Lyubomirsky et al. on boosting happiness and mental well-being. It showed that people who did a gratitude practice once a week got better results than those who did the practice three times a week.

So, less is more? Not so fast. What the research really shows is a bit more complex and a lot more interesting than that.

TL;DR: several studies have examined frequency of gratitude practice and found interesting results. But the real difference appears to come from how you practice gratitude, not how often.

The Once-a-Week Finding

What exactly happened in this infamous frequency study?

Subjects were split into three groups:

1. The first group was asked to write down 5 things they’re grateful for, once a week.
2. The second group was asked to write down 5 things they’re grateful for, three times a week.
3. The final group did no gratitude exercise at all. They were the control group.

The once-a-week gratitude group showed significant increases in their reported happiness during and in a follow-up after the trial.

The control group showed no change, as you’d expect.

But surprisingly, the 3-times-a-week group also showed no change.

In other words: based on this study, it looks like practicing gratitude three times a week is as ineffective as not practicing it at all.

If this study was all we have to go by, the conclusion would be clear: do you gratitude writing once a week and no more often than that. But this study is not the only one we have to go by. Looking across hundreds of different gratitude studies, we can see that there are positive effects reported from daily gratitude practice as well.

The Chore Factor

What explains the unusual finding from the Lyubormirsky study? It’s likely that the key factor is how a person feels about doing the practice.

Imagine this: a student signed up to be part of this study, but they aren’t really engaged. Three times a week, they go “ugh, I have to do this gratitude thing again!” and they rush through the exercise.

In this case, are we really seeing the effects of gratitude? This participant may be writing down a few things they appreciate, but what is the actual felt sense while they are doing it?

Gratitude is an internal, felt experience, after all. It’s not about the words you write down - the words are only a tool that is supposed to help you tap into the genuine feelings of gratitude and appreciation. But if the exercise becomes an annoying chore, it loses its effect.

This explains why some gratitude studies show large effects and others don’t and why some subjects within a study appear to benefit far more than others.

The words someone writes down are not The Real Thing, they are only a proxy for it. And The Real Thing (in this case the genuine, internal feelings of gratitude) cannot be measured.

When Daily Practice Wins

Some studies have found that more frequent practice leads to better results. This 2025 study shows a clear connection that explains why: researchers found that subject who did their gratitude writing in the evenings experienced significant improvements in sleep quality.

It appears that gratitude journaling is a great way to prevent tossing and turning, head full of worries kind of nights.

Since sleep is something we do every night and since sleep quality positively affects pretty much every health and mental health aspect you can name, it makes sense that a daily gratitude practice is the way to go, here.

Research has also shown that gratitude has a measurable effect on the nervous system: it improves HRV (heart rate variability) and lowers cortisol (the stress hormone). In order to get these nervous system regulation benefits, the recommended dose is to practice at least 3-4 times a week.

What Really is the Best Frequency?

To get a clearer answer to this question, let’s look at one of the largest systematic reviews of gratitude practice in existence: the 2025 PNAS meta-analysis.

This review looked at practice frequency and found that… it doesn’t matter.

More specifically “dose is not a moderator” in how effective gratitude practice is. Does that mean frequency has no effect at all? Probably not. It means that compared to other factors (which we’ll get to), frequency doesn’t matter.

In other words: doing the right kind of practice rarely is more effective than doing the wrong kind of practice a lot.

This brings us back to the chore factor mentioned above: if you’re doing gratitude as a repetitive chore, it doesn’t work. If you actually want to practice gratitude, you’re deeply engaged in the practice and you tune into real feelings of gratitude and appreciation, the benefits are significant.

One Strong Reason to Practice Daily

The Grateful App is designed around a short, fun daily gratitude practice. Why daily and not less frequently? The reason is simple: it’s much easier to do something every day than less often.

Sure, gratitude practice may also be effective if you only do it twice a week, but it’s much harder to establish a twice-a-week habit than a daily habit. And establishing a habit is key if you want to get all the benefits. This 2022 study revealed a few important things:

1. A single instance of practicing gratitude already affects your mood in a positive way; but that effect doesn’t last.
2. After 2 weeks of regular practice, there are still no long term effects.
3. After 4-6 weeks of regular practice, long term effects show up.

The easiest way to build a habit you’ll stick with for months is to repeat the behavior daily.

What all of this shows us is that the trick is to make gratitude practice a habit, but avoid making it a repetitive chore. This is exactly what we built the Grateful App for. It encourages you to practice daily and it’s designed to prevent the practice from going stale.

The app asks you to always write specific, unique moments you’re grateful for, so you don’t just repeat “I’m grateful for my family”, “I’m grateful for my health” and similar generic statements on autopilot. It also offers “deep dive” exercises that invite you to really savor the moment (remember, it’s not about the words, it’s about the internal experience). And it gives you weekly practices that add even more variety.

Our goal is to take the best of gratitude science and build it all into a simple, fun, easy to use app. Give it a try and let us know what you think!