I’ve thought about using spaced repetition myself. I have ADHD and I tend to forget about things I’ve learned. There are certain skills or hobbies I enjoy doing that benefit from knowing things, and i just want to better remember things I already learned.

For example, maybe I read a book that has a really key insight about how my brain works with ADHD. I’m not going to remember or apply that insight to my life unless I spend some time trying to remember it. By default it’s not going to stick for very long.