Excellent question Rodric29. Anger can be devastating to one's health but for you, it can lead to immediate consequences. First, follow MaggieJu's advice and deep breathe. I find that if you concentrate on your breathing, a calm fills the body. Also, try to respond to the anger. Do not react. Reaction means blurting out whatever comes to mind. Responding is more controlled and will not lead to mean behavior.
Give yourself enough time to response. This means breathing and perhaps walking away from the source of your anger to gain distance and perspective. Once you breathe deeply and allow some time to pass (perhaps a few minutes or if you do not have to respond right away--hours), return to the source of your anger and address the problem.
Meditate. Meditation does not necessarily mean sitting on the floor for hours. Take a few minutes each day to center yourself. These techniques might seem too simple to work but they do.