Yep it sure is a problem and I have the scars to prove it I use to do things like that all the time but not because I was depressed but out of pure anger I would bite my hands till they poured with blood I generally don’t feel pain when I’m angry but after talking with a nice preist a few times a week he taught me how to remain calm he was the most holy preist with the gentlest voice it was like listening to gods voice or looking in to the face of god I would burst out crying when he spoke not because I was sad because I could feel the Holy Spirit radiating from him