I am 3 days away from surgery. I, too, started to second guess myself yesterday. I was soooooo hungry and sick feeling that I didnt care anymore if I had the surgery or not, so I ate. I made pretty good choices and am now certain I still want to go through with this. These 5 days of shakes/liquids is just harder than I thought it would be. I was never been thin either, but look forward to being there one day soon. Good luck to you, You will be fine.