Emma Phipps published a beautiful piece about her experience pulling through a deep depression. She talks about two kinds of self-care. The first is the concept of watching Netflix or eating comfort foods to feel better in the moment. The second is anything you do in the interests of your future self.
For her, that involved working out, spending time with people who could understand her pain and also help her out of it, cutting down on drinking, saving money, and going to therapy to rebuild her emotional foundation.