I needed an outlet in high school and came across painting. I've actually been painting longer than I've been acting. A movie is a collaborative effort, and with painting you just have yourself. ↗
There's a tendency, when you're directing yourself, not to give the performance as much care, because you feel like there's too much focus on yourself, or that all these people are just standing around setting everything up, waiting for you. ↗
In addition to having a good partnership with a good doctor, you have to do some of the work yourself. Go online, read about it, and find out what you can tolerate. ↗