Underrated life advice: Keep proof that good things happen to you. Old photos. Kind messages. Positive feedback. Notes from great days. Whatever. Store them in a single place. Call it a Rainy Day Folder. Pop it open on a bad day and watch your mood turn. It's a free reset button.
We get so used to the coffee, the light through the window, the quiet start of the day… that we forget how many people would give anything for this kind of “normal.”