Forgiveness
Wikipedia tells us that forgiveness, in a psychological sense, is the intentional and voluntary process by which one who may initially feel victimized, undergoes a change in feelings and attitude regarding a given offense, and overcomes negative emotions such as resentment and vengeance.
Psychologists generally define forgiveness as a conscious, deliberate decision to release feelings of resentment or vengeance toward a person or group who has harmed you, regardless of whether they actually deserve your forgiveness.