To be honest? I just get completely apathetic. Literally nothing matters, including basic daily functions like food and hygiene. I sleep all the time and do nothing, including things I normally love, because my love for life is gone. But when depressed I can objectively see how something awesome is happening in my life yet take no joy away from it whatsoever. So I guess that's door number one?

Ideally it's something I want to address in therapy, whenever I can afford/get it. It's not something I'm proud of, to be sure.