It might be less tempting to think about if you called it what it is, self-sabotage, rather than "cheating." Cheating just sounds so cute and daring, right? But say to yourself, when do I get to self-sabotage? How often will I let myself self-sabotage? Will I self-sabotage for an entire day, or just for a meal? Etc. At least to me, it sounds a lot more serious and a lot less fun when I call it out by its true nature. Good luck!