The idea is borrowed from methods of survival during long training: when you run only to the nearest landmark, and not the entire distance, which is abnormally long. Everything is the same here: we only think about the next necessary action. When I don't feel like crawling out at all, I agree with myself that now I'll just get up and wash myself, and then, if anything, I'll go to bed. Then, so be it, I agree to drink a glass of water and look out the window. Then get dressed. And so on. It sounds primitive, like "I'll run to that tree and then I'll walk," but somehow it works.