Everett Worthington, a leading researcher on the science of forgiveness, has a plethora of resources available at his website. Most notably, check out his concept of REACH forgiveness (Recall, Empathize, Altruism, Committing, Holding On), which is the outcome of a great deal of theoretical and empirical research. He has even produced freely available small group materials related to the REACH concept as well as workbooks for individuals to become more forgiving, patient, humble, or positive.
