"I'm hoping that my usual high-functioning coping mechanisms related to having an obligation to others will leverage me past that stage with this piano-teaching endeavor."

Oh, I relate to this. I've been trying to figure out what obligations I can take on to leverage in this way. However I know that I frequently end up with zero freaking spoons, & thus unable to fulfill an obligation. This builds a shame cycle that sucks yet more spoons. It doesn't help that several attempts went poorly.

I hope the piano lessons are a goodness & help you build some of what you need. <3