In this paper, we describe our 4-phase-therapy program for eating disorders at a specialized unit. Core of the treatment is a 4-month day patient phase. Our approach, which implies a fixed structure in terms of time and content, is based on cognitive-behavioral group therapy. It follows the principle of self-management developed by Kanfer and involves patients in organizational and therapeutic activities. Patients' participation in our extensive efforts aiming at the prevention of eating disorders is invaluable for therapists and serves patients as an important protective factor.