Is Ho'oponopono a "Therapy"?

Someone wrote me recently asking whether Ho'oponopono could be helpful in depression . I've been cleaning with this for several weeks. While keeping the writer's confidentiality, I'm moved to share the [slightly abbreviated] note. Perhaps we can all clean with it while reading: "Dear Dr. Pappas, I see you are a psychiatrist who has also learned the art of ho'oponopono . . . I just wondered if you thought that ho'oponopono is able to help people recover from endogenous depression ? As you are the only person I have found who is both a psychiatrist and aware of this hawaiian technique, I just wondered if you practiced ho'oponopono on your clients, or do you mainly practice it on yourself ? If you do not practice it on clients, have you heard (on the ho'oponopono grapevine) so to speak if ho'oponopono is curing people of depression and other serious illnesses. It requires quite a lot of effort to practice this therapy every day and do the cleanin...