Cutting hair as a form of Self-Mutilation?

Yes that is a form of self mutilation, in my opinion anyway. I would suggest that you find a better way to cope like writing or music or painting or whatev. However, if it is only your hair and other methods aren't working then who cares. It's just hair and it grows back. Counselling might help you discover better coping mechanisms. Know, however, that we all cope in one way or another and that there's nothing wrong with you, per se. You just have a unique way of handling stress.