The reason some people get anorexia isn’t known. People with anorexia may believe they would be happier and more successful if they were thin. They want everything in their lives to be perfect. People who have this disorder are usually good students. They are involved in many school and community activities. They blame themselves if they don’t get perfect grades, or if other things in life are not perfect and use anorexia as a way to deal or gain control.