I keep shaking my head vigorously to the point it hurts. This has been going on now for months and I seem to be thinking about it all the time. I worry so much about doing it hence it is always on my mind. This is causing a great deal of pain and also making me extremely depressed. I seem to not be able to go a day without doing it... I just want to stop. I take antidepressants (but have for years.) I am a recovering addict, on methadone daily but do not drink or smoke. I eat well and exercise sometimes.