I'll say, one thing that helped me here was starting to see the "depth in the breadth", so to speak, and recognizing this jumping around for what it was. A lot of novelty seeking and bouncing between hobbies to avoid conscious regulating, which was tiring.

Now, in things that I consider important, I try to find the novelty and breadth that comes with sticking to it for a long time - stare at a hobby / occupation long enough to see the big world inside of it and realize it's more than you can take in and take time to put up some blinders so you can hone in there and see it as lots of cool novel things within a smaller space.

Also, realizing that bouncing around to all kinds of things... well, that's my form of relaxing. If I'm totally depleted, chances are what I need isn't to sit in one place and "rest", or to focus on one thing, it's to schedule time to completely not focus on one thing and allow myself to bounce all over the place and do whatever feels good (within responsible limits). It's usually a chaotic mess that amounts to no long-term benefit, but it's much more resting that trying to relax. Trying was the problem, after all.