Personality! Control it. Take time and think about your action(s) - if that's really what you want to do or not. Your personality will control your response/actions, you might not think at first and regret later... it's all about your personality! Be cool at all times. As they say: "Never make a decision when you are angry"
Are you in English class when the anger hits? lol Try wearing a rubber band around your wrist. Every time you feel a spot of anger coming on flip your wrist. And since I don't know what you are angry about then my best advice is NEVER allow someone else to have that type of control over your emotions