https://www.lesswrong.com/posts/pDzdb4smpzT3Lwbym/my-model-of-ea-burnout
(Probably somebody else has said most of this. But I personally haven't read it, and felt like writing it down myself, so here we go.)
I think that EA [editor note: "Effective Altruism"] burnout usually results from prolonged dedication to satisfying the values you think you should have, while neglecting the values you actually have.
Setting aside for the moment what “values” are and what it means to “actually” have one, suppose that I actually value these things (among others):
