Additional Study Information: Anorexia Nervosa is a serious illness and relapse rates are high. We have shown that behavioral routines get stuck/entrenched. Our newest treatment development research, Relapse Prevention and Changing Habits (REACH+) for Anorexia Nervosa, aims to help patients minimize unhelpful routines and develop more healthful recovery-oriented behavior. Participants will complete initial treatment on our inpatient eating disorders unit at New York State Psychiatric Institute. Following weight restoration, interested participants will meet with clinicians via secured Telehealth platform for outpatient treatment for about 6 months to work on changing illness behaviors, maintaining healthy eating, and maintaining a healthy weight after leaving the hospital. This study aims to evaluate this new outpatient treatment. Treatment at NYSPI is provided at no cost. To be eligible for this study, participants must be 18-60 years old, have a diagnosis of Anorexia Nervosa or, if not formally diagnosed, believe they may meet criteria. For more information and to see if you are eligible, call the Columbia Center for Eating Disorders at 646-774-8066.