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Gratitude Letter

Write a letter expressing thanks, and deliver it in person.

Duration: 10 mins Frequency: 3x/week Difficulty: Moderate
Gratitude Letter

Time Required

Budget about 10 minutes for writing the letter and at least 30 minutes for the visit, if you choose to deliver your letter in person. 

How to Do It

Call to mind someone who did something for you for which you are extremely grateful but to whom you never expressed your deep gratitude. This could be a relative, friend, teacher, or colleague. Try to pick someone who is still alive and could meet you face-to-face in the next week. It may be most helpful to select a person or act that you haven’t thought about for a while—something that isn’t always on your mind.

Now, write a letter to one of these people, guided by the following steps.

  • Write as though you are addressing this person directly (“Dear ______”).
  • Don’t worry about grammar or spelling.
  • Describe in specific terms what this person did, why you are grateful to this person, and how this person’s behavior affected your life. Try to be as concrete as possible.
  • Describe what you are doing in your life now and how you often remember their efforts.
  • Try to keep your letter to roughly one page (around 300 words).

Next, you should try if at all possible to deliver your letter in person, following these steps:

  • Plan a visit with the recipient. Let that person know you’d like to see them and have something special to share, but don’t reveal the exact purpose of the meeting.
  • When you meet, let the person know that you are grateful to them and would like to read a letter expressing your gratitude; ask that they refrain from interrupting until you’re done.
  • Take your time reading the letter. While you read, pay attention to their reaction as well as your own.
  • After you have read the letter, be receptive to their reaction and discuss your feelings together.
  • Remember to give the letter to the person when you leave.

If physical distance keeps you from making a visit, you may choose to arrange a phone or video chat.

Why You Should Try It

Feeling gratitude can improve your health and happiness; expressing gratitude also strengthens relationships. Yet sometimes expressions of thanks can be fleeting and superficial. This exercise encourages you to express gratitude in a thoughtful, deliberate way by writing—and, ideally, delivering—a letter of gratitude to a person you have never properly thanked. 

Why It Works

The letter affirms positive things in your life and reminds you how others have cared for you—life seems less bleak and lonely if someone has taken such a supportive interest in us. Visiting the giver allows you to strengthen your connection with them and remember how others value you as an individual.

Evidence That It Works

Seligman, M. E., Steen, T. A., Park, N., & Peterson, C. (2005). Positive psychology progress: empirical validation of interventionsAmerican Psychologist, 60(5), 410.

When researchers tested five different exercises, writing and delivering a Gratitude Letter showed the greatest benefit to people’s happiness one month later; however, six months after, their happiness had dropped back down to where it was before. This is why some researchers suggest doing this exercise once every six weeks or so. Participants in this study were largely white, middle-aged adults with college degrees.

Froh, J. J., Kashdan, T. B., Ozimkowski, K. M., & Miller, N. (2009). Who benefits the most from a gratitude intervention in children and adolescents? Examining positive affect as a moderatorThe Journal of Positive Psychology, 4(5), 408–22.

Adolescents who often don’t experience positive emotions showed a significant boost in positive emotions two months after writing and delivering a Gratitude Letter. Nearly 70% of the adolescents in this study were Caucasian, with the rest identifying as Asian American, African American, Hispanic, or “other.”

Research suggests that while there are benefits simply to writing the letter, you reap significantly greater benefits from delivering and reading it in person.

Who Has Tried The Practice?

Additional research has engaged members of other groups:

More research is needed to explore whether, and how, the impact of this practice extends to other groups and cultures.

Keep in Mind

In different studies, participants have taken as little as 5 minutes or as long as 30 minutes to write their letters; spending more time to deepen and enrich the practice could be a good thing, but you can also reap benefits from a short practice. 

Evidence from cross-cultural research suggests that writing Gratitude Letters may be less beneficial for people from collectivist cultures, or cultures that prioritize the needs of the group over the needs of each individual:

  • South Koreans experienced smaller improvements in well-being from writing a Gratitude Letter than Americans.
  • Similarly, Asian Americans who wrote Gratitude Letters didn’t see as big of a reduction in negative emotions as their Anglo American counterparts.
  • Indian adults felt more guilty and indebted after writing Gratitude Letters than white American, Asian American, and Taiwanese adults.

This may be because Western and non-Western countries have different views on social responsibility and emotions. Fostering gratitude towards others may be more rewarding for people in individualistic, Western societies because these cultures tend to emphasize personal independence and view gratitude as a positive emotion. People in collectivistic, non-Western societies tend to believe that everyone has a responsibility toward each other, so feelings of gratitude may come with worries about their own obligations to others or fears of being a burden.

Additionally, it may be possible to adapt this exercise for different religious groups. For example, Muslim college students who centered their Gratitude Letters around Allah felt greater happiness than those who wrote secular Gratitude Letters.


Sonja Lyubomirsky, Ph.D., University of California, Riverside
Kristin Layous, Ph.D., California State University, East Bay
Martin Seligman, Ph.D., University of Pennsylvania


Al-Seheel, A., & Noor, N. M. (2016). Effects of an Islamic-based gratitude strategy on Muslim students’ level of happiness. Mental Health, Religion & Culture, 19(7), 686–703.

Boehm, J. K., Lyubomirsky, S., & Sheldon, K. M. (2011). A longitudinal experimental study comparing the effectiveness of happiness-enhancing strategies in Anglo Americans and Asian Americans. Cognition and Emotion, 25(7), 1263–1272.

Fritz, M. M., Armenta, C. N., Walsh, L. C., & Lyubomirsky, S. (2019). Gratitude facilitates healthy eating behavior in adolescents and young adults. Journal of Experimental Social Psychology, 81, 4–14.

Khanna, P., & Singh, K. (2019). Do all positive psychology exercises work for everyone? Replication of seligman et al.’s (2005) interventions among adolescents. Psychological Studies, 64(1), 1–10.

Layous, K., Lee, H., Choi, I., & Lyubomirsky, S. (2013). Culture matters when designing a successful happiness-increasing activity: A comparison of the United States and South Korea. Journal of Cross-Cultural Psychology, 44(8), 1294–1303.

Shin, L. J., Armenta, C. N., Kamble, S. V., Chang, S., Wu, H., & Lyubomirsky, S. (2020). Gratitude in collectivist and individualist cultures. The Journal of Positive Psychology, 5, 598–604.

Titova, L., Wagstaff, A. E., & Parks, A. C. (2017). Disentangling the effects of gratitude and optimism: A cross-cultural investigation. Journal of Cross-Cultural Psychology, 48(5), 754–770.

Writing and delivering a Gratitude Letter is a powerful way to connect with those who have helped you. Do you have an attitude of gratitude? Take our Gratitude quiz to find out: 

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