Sam Vaknin is Visiting Professor of Psychology, Southern Federal University, Rostov-on-Don, Russia and Professor of Finance and Psychology in CIAPS (Centre for International Advanced and Professional Studies). Sam Vaknin is the author of Malignant Self-love: Narcissism Revisited and other books about personality disorders. His work is cited in hundreds of books and dozens of academic papers. He spent the past 6 years developing Cold Therapy: a treatment modality for Narcissistic Personality Disorder (NPD). Over the years, with dozens of volunteers, he found that it was effective with clients suffering from a major depressive episode as well.