In what ways do you punish yourself? Why?

When I’m depressed, I often want to punish myself by trying to rid myself of all the good things in my life: family, friends, home, job, etc. I don’t feel like I deserve anything good, and, in fact, I don’t understand how I could feel the way I do when I have so many blessings. Something is wrong. So I punish myself—or try to.

This question was inspired by this answer. I think our minds find the most perverse ways of trying to hurt ourselves—such ass backward thinking. It only makes sense when we are angry with ourselves or angry with the world, yet powerless to do anything about it.

In what ways have you punished yourself? What were the circumstances? Why did you do it? What point were you trying to prove?