Yes, Jane, the resistance you’ve felt is very much like getting back on a diet, the particular denial of choice being the assumption that any choice you now make to eat less will last into the future.
You’ve established that taking control of mindless eating in the kitchen will continue (for at least a few days?). So pay attention to the “just for now” aspect of choice, so you don’t feel locked in once you’ve begun.
As for “The Sulky Teenager” mindset, it’s often the case that a powerful mindset trips you up the first time it’s encountered, although it might be better described as something like, “my life’s a mess” or “I’m a useless mother” or something like that? I refer you to Week 5 for working with this – and of course ask any questions.