> Another problem is the feedback loop of mental illness. A lot of people might feel better if they got exercise, ate healthy, got enough sleep, made some friends, took on some fun hobbies, etc. but most people aren’t willing or able to do any of that if they are stuck in a bad mental state.

I've found CBT super helpful for my ADHD because it focuses on the small steps to break that loop. I thoroughly recommend it for ADHD and mental illness, particularly for engineers as it's far more system based and obviously "logical" than any other form of therapy I've tried.