i think it is a much better idea to get your frustration out punching inanimate objects than banging your head. you can wrap up you knuckles and wear a wrist brace to minimize damage to your hands. can you hang a punching bag? they're meant to be hit, so the impact to your hand, arm, and shoulder bones is minimized. please do your best to avoid injuring your head. when you do get to see the dr., be honest about your self injurious habits, so they may accurately assist you. thank you for sharing this.