I got super burned out working in startups for about 8 years. didn't realize it on the inside. now that i'm out, i look back and realize i was in a constant state of stress and anxiety. i got my sleep back, started exercising, started doing ice plunge/sauna, cut stress, limited exposure to stupid messaging streams like slack. it's a new world. i had to remake myself chemically in tiny steps and it took about two solid years to do it.
Yes, while working and raising a young boy. I just needed to escape the hellish pressure of having raised millions to build a business that didn't work, and worrying about my obligations to investors and the team members I hired. It was a bunch of tiny steps that I had to slot into the constraints of a working life. I recommend "Tiny Habits": https://tinyhabits.com Fogg has good ideas about how to redesign behavior under constraints.