I have always said on her thread that I think this is a big part of her problem. She's always been miserable and I think she thought losing the weight would solve all her misery.People think when they lose that amount of weight life will be amazing and sunshine and roses after being on the sidelines and unable to do alot being that obese.
Regardless of plan or diet when the weight is gone they have to maintain while grappling a constant fear of returning to their original size. (This is why emmas forever having long baths and early nights, it's so she doesn't eat)
Not to mention to body image issues of loose skin and the hardship of not being able to use food as a comfort.
I think once you have severe weight issues you're never truly free from them
There's always something though.
I would imagine it's very hard, if not near impossible to lose so much weight and not become obsessed with numbers.