Some view anger as part of the fight or flight brain response to the perceived threat of pain. Anger becomes the predominant feeling behaviorally, cognitively and physiologically when a person makes the conscious choice to take action to immediately stop the threatening behavior of another outside force.
Most commonly, those who experience anger explain its arousal as a result of "what has happened to them" and in most cases the described provocations occur immediately before the anger experience. Anger can be of multi causal origin, some of which may be remote events, but people rarely find more than one cause for their anger.
How to suppress anger
First, figure out the source of your anger. You may require a psychologist or a qualified counselor to help you identify the sources, since some of these sources may not be immediately evident.
Second, stop anger where it begins. Learn to express anger by describing your feelings and the situation or behavior that made you angry when or shortly after the situation occurs.
Third, be willing to release your anger. Hanging on to anger can only exacerbate its effects on you and those you love.