In short: each night, three lines: three good moments, one person to thank, one kind wish. Two minutes. "The true person is grateful and thankful" (AN 2.32).
3 good moments
1 thank-you
1 kind wish
Guided evening version · Quotes on gratitude · Gratitude meditation
Questions people ask
How do I keep a Buddhist gratitude journal?
Each night, write three good moments from the day, one person to thank, and one kind wish. Two minutes is enough.