That's because you shouldn't diet. You should fix your lifestyle. Diets are for normal to slightly overweight people to temporarily burn off some excess (recently gained) fat and water weight, not for gigantic hambominations who do NOT need a temporary fix for a slight temporary aesthetic problem, but a complete change of everything they do. Otherwise you'll burn it off, go back to the habits that made you such a disgusting blubber-roll-monster in the first place and gain it all back at a more rapid pace than you can waddle to a newly stuffed fridge. Diets are often silly and you need to develop a sustainable lifestyle, but you can't blame them for your choices and extremely disgusting habits that even put maggots and cockroaches to shame in pure vileness and grossness.  Furthermore, watch Secret Eaters. It isn't just that diets fail; YOU fail. Watch what you mindlessly graze, you cow! Don't think those fries don't count because they were just a snack or you bought them when nobody's watching- only a ham is stupid enough to think it can defeat physics.