Ask HN: At a peak of my dev career, I hate my life
a drastic change, like moving to a diff country/culture could be a good start. 
it might not be the end solution, but as a starting point it could help you because drastic (non-toxic) changes tend to put us on our toes, attentive to new environment, etc.  specially if you're in a city-country where walking is the norm (i.e. you don't depend on a car (isolated) to get around).
Move to a sunny country like spain (southern spain, works). there are non-lucrative visas you can get without much hassle. good luck