Trouble staying away from food

It has only been three weeks today. I am down 11 pounds but have already starting slipping into bad habits, ie reaching for something quick and tasty. I don't know what I am in for once they give me my first fill. For me it is so mental and I know mentally I am not at a point to walk away from food, it is afterall my drug of choice. I am not very familiar with forums so I will navigate the best I can to gather information to hopefully educate me and motivate me.