Express gratitude within 24 hours
Feeling grateful for someone's thoughtful help predicts a better relationship with them a month later.
A colleague covers your shift, a friend sends the link you needed or someone listens while you vent, and you mean to thank them. Then the evening fills up and the moment slips by. This habit turns that intention into one specific thanks, sent within a day, which usually takes about two minutes.
What it helps with
Feeling distant from people
Feeling grateful for someone's thoughtful help predicts a better relationship with them a month later.
Building new friendships
Gratitude comes more from feeling understood and cared for than from the size of a favor, and it's linked to growing closer.
Key facts
- 1In a study of sorority members, gratitude felt during a week of gifts was linked to closer relationships with the giver one month later.
- 2In a sorority gift-giving study, how thoughtful a gift seemed predicted gratitude more than how much it cost.
- 3In experiments, people writing thank-you letters underestimated how pleased recipients would feel and overestimated how awkward recipients would find it.
- 4In lab experiments, helpers who were thanked were about twice as likely to help again as helpers who were not thanked.
- 5In a study of couples, thanks that praised the partner was linked to the partner seeing the thanker as more caring and responsive.
Why a quick thanks matters
Many everyday favors work like quiet trades. Someone helps you, and you feel you owe them until you pay it back. That keeps things fair, yet it rarely makes people feel closer. Gratitude moves your attention from the debt to the person and the care they showed.
A thank-you also tells the helper that their effort landed, which they might otherwise never learn. Timing matters for a practical reason. While the moment is fresh, you still remember the details, so saying something specific is easy. A vague plan to thank someone soon often never happens at all.
How thanks brings people closer
Researchers link gratitude to perceived responsiveness, which means feeling that someone understands and cares about what you need. When a favor feels thoughtful, you tend to see the giver as someone worth getting closer to. Psychologist Sara Algoe, whose studies run through this article, describes gratitude as helping people find good partners, remember their value and grow closer to them.
How you phrase the thanks shapes how it lands. Praising the other person, as in "you were so patient," puts the focus on them. Describing only your own benefit, like "that saved me time," keeps the focus on you. In a study of couples, the first kind was linked to stronger feelings of closeness in the person being thanked.
What the research found
In a study of a university sorority during a week of gift-giving, newer members who felt more grateful to their mentor reported closer relationships with her a month later. How thoughtful the gifts seemed predicted gratitude more than how much they cost. In the couples study, partners who heard thanks that praised them saw the thanker as more responsive and felt more loving afterward.
Other experiments help explain why people hold back. People who wrote short thank-you letters underestimated how surprised and pleased recipients would be, and overestimated how awkward recipients would feel. In separate lab experiments, helpers who got a brief thank-you were about twice as likely to help again as those who were not thanked. These studies mostly involved students and couples in the United States, and the effects on any single relationship were modest. The 24-hour window itself has not been tested, so treat it as a practical rule for keeping the details fresh.
Fitting it into your day
The easiest time is a regular evening moment, such as just after dinner. Look back over the day, pick one person who helped, and send a text, an email or a voice message. If a neighbor helped you carry boxes at 2 p.m. on Saturday, your message goes out before 2 p.m. on Sunday, and the after-dinner check catches it that same evening. One thanks a day is plenty, since the studies tested single, specific messages rather than a steady stream of them. A simple pattern keeps it quick: what they did, how it helped and what it says about them.
On a busy or low day, one honest sentence still counts as one specific thanks, sent within a day. If nobody helped you today, thank someone for something earlier in the week, and yes, the colleague who refilled the coffee machine counts. Over a few weeks, you become someone who notices help and says so. If you feel lonely or low most days for more than a couple of weeks, talk to a doctor or counselor as well. Who helped you today, even in a small way?
Action steps
- 1Pick one person each evening. After dinner, think back over the last 24 hours and choose one person whose help, time or kindness made a difference to you.
- 2Say what they did and how it helped. In one or two sentences, name exactly what they did and the effect it had on your day, by text, note, call or in person.
- 3Add a word about who they are. Finish with a quality you noticed, such as patience, reliability or thoughtfulness, so the thanks is about them as well as the favor.
Suggested routines
- Low mood
Share 1 personal win daily
Telling others about good news is linked to feeling even better, beyond the boost from the good event itself.
- Social isolation
Meet up with a friend once a week
People with stronger relationships had 50% better odds of being alive over about 7.5 years.
- Low mood
Have 3 quick conversations a day
People feel happier on days they chat with more acquaintances and strangers than usual, however much time they spend with close friends.
References
- Algoe, S. B., et al. (2008). Beyond reciprocity: Gratitude and relationships in everyday life. Emotion, 8(3), 425-429. doi.org/10.1037/1528-3542.8.3.425
- Algoe, S. B., et al. (2016). Putting the "you" in "thank you": Examining other-praising behavior as the active relational ingredient in expressed gratitude. Social Psychological and Personality Science, 7(7), 658-666. doi.org/10.1177/1948550616651681
- Kumar, A., & Epley, N. (2018). Undervaluing gratitude: Expressers misunderstand the consequences of showing appreciation. Psychological Science, 29(9), 1423-1435. doi.org/10.1177/0956797618772506
- Grant, A. M., & Gino, F. (2010). A little thanks goes a long way: Explaining why gratitude expressions motivate prosocial behavior. Journal of Personality and Social Psychology, 98(6), 946-955. doi.org/10.1037/a0017935