The professional literature lacks consensus on the effect of guilt on an individual. The differing definitions of guilt and the distinctions made between guilt and shame may partly underlie this confusion. The professional literature also notes the self-centeredness of offenders and maintains that guilt about impacts on others is incompatible with guilt that focuses on one's self. However, guilt can serve as a guide to moral action. Altruistic behavior can reduce guilt and is incompatible with crime. People who can cry for the hurt of others and have uncomfortable feelings related to their illegal actions are ready and willing to change. Four case examples from the author's clinical groups illustrate how offenders' feelings of guilt can be used as an impetus for improvement. Description of the treatment approach and 24 references.