I am a techie, so I always try to solve my problems with some kind of tool, if available.
But in this case, I haven't found a good tool yet.

I create a list of my successes, achievements, and pictures that cheer me up, for example in Google Keep, Sheets or notion, and look at them when I feel bad.
This helps me a lot, but using these tools is cumbersome and not optimized.
How does it look for you?