Black-and-white thinking is the addict's mentality, which can be a bar to recovery when one is still active. But an addict who finds the willingness can then rely on the same trait to stay clean: "Just don't drink," they say in AA.
How's that going to work for an addicted eater? Food addicts have to take the tiger out of the cage three times a day. I've read that some drinkers have tried "controlled drinking," and it hasn't been very successful. Eaters don't just have to try it; they must practice it to survive.
Having a food plan is an attempt to address that, and having clear boundaries is a key to its working. But the comfort of all or nothing is just out of reach.
...
I'm saying that food addicts, unlike alcoholics and may others, have both to try for perfection and to accept that perfection is unattainable, and that the only tool left is a wholesome discipline.
The problem is, if we had any clue about wholesome discipline, we wouldn't be addicts.

Michael Prager