Smile File
At the top of a page in your Project Quartz journal, write “Smile File.”
Whenever you get a compliment or piece of positive feedback, record it here. (You can also record positive thoughts you have about yourself!)
Whenever you need a self-esteem boost, re-read this page to remember how wonderful you truly are :).
Source
The Little Book of Lykke: Secrets of the World's Happiest People (2017) by Meik Wiking