I've got to say out loud the things you probably already know but can easily ignore since nobody really talks about it. If you're genetically predisposed to getting fat, you're going to get fat. If all you eat is junk food, you're going to get fat. If all you do is sit, you're going to get fat. If you do all of the above, you're going to get really fat. Trust me, I know first-hand. I got really fat, fast. It's really easy to pile on the pounds.
Macaroni and cheese was my 'comfort' food. I'd tuck into a bowl when feeling down, pig out until my gut hurt, then eat more. Then, I'd dig into that luscious richness when I was feeling fine, and the bowls got bigger and bigger. Needless to say, so did I. "Oh, I'll make up for it tomorrow by not eating," I'd think to myself as I slobbered all over my chin. I'd forget by the next day and slobber that chin up yet again.