Have you or your colleagues worked on forgiveness with people who have significant mental health challenges, such as major depressive disorder or bi-polar disorder?
Yes, my colleague, the psychiatrist Dr. Richard Fitzgibbons, has case studies of this kind in our book, Forgiveness Therapy, 2015. Not all people who show major depression or bi-polar disorder are excessively angry with other people, but Dr. Fitzgibbons does screen for this. When people with significant mental health challenges show unhealthy anger caused by unjust treatment from other people, then Forgiveness Therapy is warranted and shown to be effective in these case studies.
For additional information, see Forgiveness Research.