I Need To Work On My Attitude

I have a tendency to get angry and snap over the smallest things. I have a habit of arguing with almost everybody because I always feel as though I'm the only right one. I also have a habit of punching and/or biting myself when I'm so freaking angry. Attitudes like this seem to run in my family, from my grandpa to my father and now to me. I need some counseling or something to handle my attitude. Sometimes I don't admit it but I need help with my attitude.