The document defines anger as a strong feeling of displeasure or hostility that often occurs when a person feels wronged or endangered. Anger can serve purposes like protecting oneself but can also be used to confuse or control others. The major causes of anger are listed as dependency relationships, resentment, grief, victim mentality, abusive relationships, and low self-esteem. The document provides steps to control anger such as making a list of triggers, talking about feelings, breathing exercises, thinking before acting angrily, making peace with oneself and the other person, and forgiving oneself and apologizing.