Think before you speak. In the heat of the moment, it's easy to say something you'll later regret. ...
Once you're calm, express your anger. As soon as you're thinking clearly, express your frustration in an assertive but nonconfrontational way.
Get some exercise. Physical activity can help reduce stress that can cause you to become angry. ...
Take a timeout. Timeouts aren't just for kids. Give yourself short breaks during times of the day that tend to be stressful.
Identify possible solutions. Instead of focusing on what made you mad, work on resolving the issue at hand.