i had the same problem until recently.last year, i starved myself and when i got skinny, i started binging on junk food. i coudn't stop. what i did to stop it was to try not to be all by myself at house cuz if there was nobody around, i feel motivated to pig out. also, i tried slowly to stop pigging out.let's say if u pig out everyday, try to only pig out every other day and so on. good luck and u can do it!