There's more to it than just "develop healthy habits" though. There are psychological reasons one could have for overeating like having eating disorders or using food to treat depression which could require psychiatric assistance. My brother died at 600+ lbs after breaking two lap bands. He required some serious intervention, but we couldn't afford what he needed, he was homeless and he couldn't hold down a job, so he died instead.

Mind you, being overweight wasn't the only cause for his death. He was eating very unhealthy foods because they were a cheaper means to fill himself up since his stomach was huge. His severe ADHD prevented him from being able to hold down a job despite being a fairly intelligent person.

He did some shitty things in his life, so don't give too much sympathy, but in retrospect doing something to help his ADHD early on could have helped to prevent the train wreck that became his life. Maybe that would have helped him do better in school, be better to our parents, be able to hold down a job, etc. which could have prevented overeating to treat his depression.