I do the exact same thing!!! one thing I do when i get a craving for really bad foods is eat fruit. It works really well because the sweetness. Another thing i do if i get a craving is go work out. After I work out I feel really good about myself and I dont want to waste my hard work on bad food. Also what I find helpful is brushing my teeth. After I brush my teeth i dont want to eat anything because my teeth feel really clean. If none of these work try and find something to distract you like a hobby or something you really like to do. you could dance, sew, clean, write, sleep, sing, call someone up, play an instrument, go for a walk, laugh, make something, ect.. Good luck i really hope i helped somehow!!