Today I realized my dad's kinda passive aggressive. I was frustrated as hell, went to my bed, and...it looked kinda like seizure. crying, etc. Anyway, I hit my forehead very hard with my palm several times. It's blunt enough that I got away without scars, but I hit really hard. There's probably some risk of getting concussions if this continues. My head feels abnormal atm but i doubt its serious this time. Sometimes I also hit my arms etc. I stay away from eyes, nose, etc. I have no self-control. Any similar experiences or advice?