Suppressed anger can have very negative effects as well. If people keep their anger buried deep inside they might get a headache or their stomach might start to hurt. It's not good to hide anger, so one should find a way to let it out without hurting himself or others.
Sometimes, demonstration of an exaggerated anger can be used as an effective manipulation strategy in order to succeed in negotiation. It is found that people easily give up to those who are powerful and stubborn. However, using force is not a sign of strength. If we talk seriously and reasonably, there is no need to amply anger as a tactics. When we aren’t able prove with reason then anger begins. Therefore, anger is a sign of weakness.
People can bring their anger to more manageable levels with assistance of trained professional who uses therapy in which the clients are taught relaxation skills to control their arousal of anger and exercise on their attention, thoughts, images, and feelings.
If you see that you are starting to angry then take a "time-out" that means that you will stop talking long enough to think about it, calm down, and get your control back and clarify what you want or how you want to deal with the other person.
Research has shown that anger leads to a high arousal, high energy state. The best way to reduce anger is to do something constructive and energetic such as exercises, sports, or something physically active that assists to solve the problem.
Keeping anger has negative effects on your body and taking away you from enjoyment of the present moment. One cannot feel angry and happy at the same time! Therefore, you have a choice - anger or happiness
If you want to decrease your anger at someone, the first step is to make every effort to see the situation from his point-of-view. Understanding the situation, point of view of the opponent, and the causes of his behavior is usually the best way to get control of anger.