One of the greatest causes of anger is desire to control. Sometimes, the desire is justified when the same is guided by the cause of security or service. Many a time, desire to control comes from egoistic mind struggling to gain control by several means. And when such means seem to fail, ego begins to lose resulting in anger and aggression. Therefore, to control one’s anger, one must look after their ego, and to do that, knowledge of oneself is essential. Ego can never survive in the mind that is filled with true knowledge.