oh hun I know how you feel as Ive been there LOTS of times.
You just have to get in the right frame of mind and try to stick to your guns and say no! Its soooooooo hard and because I can't seem to ss I have gone to the 790 plan and seem to be sticking to that ok.
i am currently in my third week of SS. I have to say that the first two weeks for me were a nightmare but remeber that you have chosen to do this diet for a reason, I took a "before" picture to aid my motivation and boy did it work. you have done this before so remember that strength and you'll do it again. Take care guys I wish you all the best xx