I'm a month out from WLS. I wish someone had told me that will still like candy and salty/fatty things and not to cheat ever or it's all going to be for naught. I didn't spend $14K for a new life just to ruin it again.
You'll still need just as much discipline to break head hunger and breaking bad habits as you did before. I don't even want a snack sometimes, but I'm still standing in front of the refrigerator staring into the shelves looking for something that I don't need or want. It's very hard to get past that....VERY HARD...