The client was a 70-year-old woman who suffered from sleep disturbances, anger toward surrounding
people(explosive anger disorder), hwa-byung symptoms, and the difficulties to break from the disturbing
life. The difficulties were formed from the unfair and unjust treatment by the former co-worker.
Forgiveness therapy that is fundamentally to resolve the deep pain experienced by the interpersonal relations has been chosen as a means of overcoming the difficulties. Through the forgiving process,
difficulties such as sleep disturbances were solved, at the same time she could evaluate her past life more
positively and satisfying. Forgiveness therapy has been proved to be effective in resolving interpersonal
conflicts that were not solved until the old age and can improve the quality of life of older people.