One of the most common reason for binging is restricting. They go hand in hand.
So much this! When fixing my eating disorder, my first task was to stuff the kitchen with more of my 'treats' (crisps & chocolate) than anyone could possibly eat in the biggest binge ever. And keep those cupboards stocked!
This was accompanied by gentle reminders to self that I could have chocolate & crisps any time I wanted, I owned them, it isn't against the law and it's a morally neutral choice - I still NEVER refer to foods or eating as good or bad. The other part of the gentle reminder is that the second piece of chocolate tastes exactly like the first. I could still have all the pieces I wanted, but the thing is to taste it - eat it mindfully, if you like. Then taste the next one, if you have it. You've got a kitchen full of the stuff, no need to cram it all in at once (you couldn't anyway - that's why there has to be so much of it).
The next task was to 'listen' to what I wanted to eat - and have it. This did sometimes mean going out at 3am to buy smoked salmon, and often cooking 'restaurant' dinners at home when I might normally have shoved something quick in the oven. The purpose of this bit is to get back in touch with what we really want to eat, and to learn we are worth the effort. Women in particular are prone to forgetting how to say "I want". We definitely deserve to know what we ant and, as far as possible, to have it.
The rest was mainly understanding what I was doing, unlearning a few pointless rules about finishing the plate & not wasting food, and getting used to the genuine feelings of hunger, appetite and sufficiency.
That was 40 years ago. I do still sometimes binge, but now it's no big deal. I know my appetite will sort me out over the next few days; my weight hardly changes from year to year.
And there's always chocolate in my fridge!