True, it takes belief, courage and conviction, but it is very much worth it in the end. This is different for everyone. Some people, albeit very few, recover on their own without any help. I'd say this isn't recommended, it is important to have determination and a desire to be well again.
Information Eating disorder centers tend to vary in their approach to treatment.
For many years, eating disorders, and anorexia in particular, were viewed as physical rather than pyschological conditions. The emphasis was on getting the patient's weight stabilised and then discharging them. Because such treatment didn't deal with the pyschological aspects of the disease, often not even the triggers behind it, the relapse numbers were very high. Nowadays, treatment involves concentrating primarily on the patient's pyschological problems. Different treatment centers have different methods.