I’m on a slow upswing from a long burnout after (over)working a similar timeframe.

I tried everything I could imagine and read about, no matter what I did the two most important ingredients were “time” and “therapy”.

I guess “exploring other things that I enjoy” would be a third ingredient. E.g. I started playing music again for the first time since college. Music eventually led to (necessary) MIDI hacking which got me programming again.