I have a history of anorexia, bullemia and then most recently just binging.
Ever since I have been on SW (3 months) I've not had a single binge. This is due to a mix of the plan being balanced and leaving me satisfied, and keeping a reflective diary that lists everything I eat and how I feel about what I ate, my moods, and life in general.
For me personally, after a lifetime of disordered eating, if I need to keep writing this diary every day for the rest of my life, that's what I'll do.
For the sake of 10 minutes out of my evening it's worth it, compared to going back to the misery and depression of binging, and the damage it was doing to me.
If I had diabetes and had to take insulin for life, or thyroid problems and had to take thyroxine, I'd have to suck it up and stick with it. So for me this is the same. If it keeps me from wasting my life away its worth it.
Incidentally recent studies show that people that have been overweight and lost it, will continue to need less calories than "normal" people, even after they reach target weight. So bearing that in mind, staying on plan but with more healthy extras seems a sensible way to maintain.
Here's the link about the study, sorry it's to the Daily Mail but the original study is in a medical journal you have to subscribe to view so although I could see it at work I couldn't link to it
Diet tips: Cut out 300 calories for good or you'll pile the pounds straight back on | Mail Online