I know it's violent, campy, and corny, but it's a damn good lesson in what Narcissistic Personality Disorder is and what it does to people. It helped me frame my own abuse and trauma at the hands of abuser's NPD, in ways that helped me break free from those people later on. Moreover, once you've been victimized this way, one has a tendency to fall back into bad habits with abusers. The film just gave me something profound to recall when exercising mindfulness around this cycle, and how to exit quickly.
