A reaction is a quick and instant action towards a stimulus. It does not involve an evaluation of action or its impact before the action is done. Rather, it is driven by emotions on autopilot mode without any filter. In some situations a reaction is accepted but in others it can have a negative outcome. 

Anger is a normal, healthy emotion, neither good nor bad. Like any emotion, it conveys a message, telling you that a situation is upsetting, unjust, or threatening. If your knee-jerk reaction to anger is to explode, however, that message never has a chance to be conveyed.

1. Think before you speak

If we're really angry, it can be very difficult to calm down in the moment.

If you think about how to manage your anger when you're feeling calmer, you can avoid feeling overwhelmed by it in the heat of the moment.