Three good things
Three good things is a gratitude journaling format in which you write three specific good moments from the day, and then stop.
Three good things is the most common gratitude journaling format. At the end of the day you write three specific good moments from it, and then you stop.
The evidence sits with the broader practice rather than with the number. Emmons and McCullough's 2003 experiment, in the Journal of Personality and Social Psychology, found that people listing things they were grateful for reported more optimism and higher life satisfaction than people listing hassles — but no study cited here tested three against two or five. Three is a practical convention, not a research finding, and anyone telling you the number itself is load-bearing is overselling it.
Why three, then
Because it is small enough to survive a bad day. A format you can finish in thirty seconds is one you will still finish the evening after you missed one, which is the moment most journals actually die. Ambition is the failure mode, not indifference.
The part that does carry weight is specificity. "The chai someone made without being asked" is a moment you could still picture a year from now. "Family" is a category, and categories are forgettable. Write three you can see.
Research
- Counting blessings versus burdens: an experimental investigation of gratitude and subjective well-being in daily lifeEmmons, R. A., & McCullough, M. E. (2003)
Common questions
- Why three and not five or ten?
- Because three is small enough that you will still do it on a bad day, not because a study compared the numbers. None of the research cited here tested three against any other count. Treat it as a practical size chosen to survive tiredness, and drop to one line on the evenings when three is too many.
- What counts as a good thing?
- Something specific and true rather than something impressive. The coffee was hot, the walk home was quiet, one message landed well. Specific enough that you would recognise the moment a year from now is the only real test, and on flat days the practice is noticing at all.
- Should I write them in the morning or at night?
- Most people write at night, and there is a reason to prefer it — the closing moments of an experience carry outsized weight in how it gets remembered, so the last thing you attend to is not neutral. That said, no study has tested morning against evening for this. An entry you actually write beats a better-timed one you skip.