Here's how to write a gratitude letter: choose someone who made a real difference in your life and whom you never properly thanked. Write to them directly, describe exactly what they did and how it affected you, and share where you are now. Then read it to them, send it, or simply keep it.
A gratitude letter is a thank-you that goes deeper than a quick note. The Greater Good Science Center at UC Berkeley describes it as a letter to someone still alive who did something important for you that you never properly thanked. It takes about 10 minutes to write, plus at least 30 minutes if you visit the person to read it.
It's different from a gratitude journal, which is private and ongoing. A gratitude letter is aimed at one person. If you want daily journal ideas instead, try these gratitude journal prompts.
Choose your person. Think of a relative, friend, teacher, coach or colleague. The Greater Good practice suggests picking someone you could see in person within a week, and ideally someone you haven't thought about in a while.
Write to them directly. Start with a greeting, like "Dear Ms. Patel," and write as if you were talking to them. Don't worry about grammar or spelling.
Be specific. Describe exactly what they did, why you're grateful, and how it affected your life. "You stayed after class twice a week to help me with algebra" means more than "You were a great teacher."
Bring them up to date. Tell them what you're doing now and how often you remember what they did.
Keep it short enough to read aloud. According to the Greater Good page, people in the research spent anywhere from 5 to 30 minutes writing. Longer may go deeper, but a short letter still counts.
Decide how you'll share it. See the options below.
The Greater Good practice describes an in-person delivery:
Arrange a visit without telling them what it's for.
When you meet, say you're grateful to them and would like to read something. Ask them not to interrupt until you finish.
Read slowly. Notice their reaction and your own.
Afterward, let them respond, and talk about how you both feel.
Leave the letter with them.
If a visit isn't possible, a phone or video call works too. Harvard Health also suggests a thank-you letter or email, ideally delivered in person.
Does delivery matter? The Greater Good page says writing the letter has benefits, but delivering and reading it in person appears to bring significantly greater benefits. If the person has died, or reaching out doesn't feel right, you can still write the letter for yourself. Just know that this is a different exercise from the one researchers studied.
This is an example to show the shape of a letter. Yours should use your own words and memories.
Dear Mr. Alvarez,
You probably don't remember me. I was the quiet kid in the back row of your tenth grade chemistry class in 2009. I've wanted to write to you for years.
That spring, my parents were going through a divorce and I stopped turning in homework. Instead of failing me, you asked me to stay after class. You didn't push me to talk. You just said, "You're good at this. Don't let this year take it from you." Then you let me finish my labs at lunch for the rest of the term.
I passed. More than that, I kept going. I'm a lab technician at a hospital now, and some days, when I'm running samples, I think about that conversation.
I never said thank you. So: thank you. You saw me at a time when I didn't feel seen.
With gratitude,
Jordan
Not sure who to write to? These questions can help you find your person:
Who believed in you before you believed in yourself?
Who taught you a skill you still use every week?
Who showed up during one of your hardest times?
Who gave you a chance you hadn't earned yet?
Who said something years ago that you still think about?
Who made a tough job or a hard school year easier?
Who introduced you to something you now love?
Who helped you without being asked?
Sentence starters for the letter itself:
"I've never properly thanked you for..."
"I still remember the day you..."
"Because of you, I..."
"These days I'm..."
"I think about what you did whenever..."
A boost that fades. In a 2005 study by Martin Seligman and colleagues, writing and delivering a gratitude letter gave the largest happiness gain of the five exercises tested at one month. By six months, happiness had returned to where it started. Some researchers suggest repeating the practice about every six weeks, according to the Greater Good page.
Who was studied. Participants in that study were mostly white, middle-aged adults with college degrees. Later studies included teens and adults in other groups and countries, but the Greater Good page notes that more research is needed.
Cultural differences. In one study, people in South Korea gained less in well-being than Americans did. In others, Indian adults reported more guilt and indebtedness than the other groups studied. The Greater Good page suggests that in more collectivist cultures, people may worry about obligation or being a burden. The practice may be adaptable. For example, Muslim college students who centered their letters around Allah reported greater happiness than those who wrote secular letters.
Mixed results. Harvard Health notes that studies like these cannot prove cause and effect, and that not all results were positive. In one study, children and teens who wrote thank-you letters may have made the recipients happier without improving their own well-being.
The bottom line: a gratitude letter is a kind thing to do, and it may give you a lift. The lift tends to fade, so think of it as something to repeat now and then, not a one-time fix.
Short enough to read aloud in a few minutes. The Greater Good practice suggests about 10 minutes of writing, and people in the research wrote for anywhere from 5 to 30 minutes.
No. Reading it in person appears to bring greater benefits, but a phone call, a video call, a mailed letter or an email still thanks them.
Yes, as a private reflection. The studied practice uses someone who is still alive, so this is a different exercise, but it can still be a meaningful way to remember them.
Some researchers suggest about every six weeks, and Harvard Health suggests sending at least one gratitude letter a month.
Dear You: Daily Letters is for writing to yourself, not for sending letters to other people. If you'd like a regular nudge toward gratitude, it gives you a daily letter chosen from six moods, including gratitude, and each one ends with a small step and a question you can answer in a private write-back reply. It has no account or ads, and your letters and notes stay on your iPhone.
Get Dear You free on the App Store