Hypnotherapy. You're behavior might be considered extreme and out of the ordinary. A good hypnotherapist can suggest an alternate behavior to your subconscious that will then become the new normal. Instead of going off the deep end when in a confrontation, you'll be able to utilize your new behavior and stay in control. Believe it or not, this works amazingly well to cure "road rage" as well.
That's why they have anger management courses. To help you find coping strategies to prevent your anger boiling over. They can be free & if you are under 16 & live at home they can make your parents do the parent version of your coarse so it all works together.