Turning Poison to Medicine

"...hostility has been associated with increased coronary blockage, increased risk of heart attack, and increased risk of dying from all causes. Redford Williams, in research at Duke University on the relationship between hostility and heart disease, has shown that hostile men are seven times more likely to die within 25 years from any cause compared to less hostile men (Williams and Williams, 1993). In numerous studies assessing stress in the laboratory, stress has been shown to result in increased blood pressure, heart rate, and reduced blood flow to the heart (Jacobs, 2001, p. 86)."

synonyms for hostility: 

antagonism, unfriendliness, enmity, malevolence, malice, unkindness, rancor, venom, hatred, loathing, fighting, conflict, armed conflict, combat, aggression, warfare, war, violence 

Save yourself, brother-man. Release the anger and hang up your boxing gloves. Let your life lived well be your greatest "revenge."