Recently, I always want to bite my tongue until it bleeds or bite the wall of my mouth or lips. This kind of mentality forces me all the time and is very painful. What should I do?

If you have a self-abuse tendency, it is not serious. You can tie a tighter rubber band on your wrist first. When you have this kind of self-abuse impulse, you can pull the rubber band hard and flick your skin. It will hurt. But it won't be painful, just remind yourself not to hurt your body. When you understand the meaning of life and find someone you are willing to sacrifice your body and life to protect, you will cherish your body.