You can do it , just keep thinking how much this is going to benefit you and just think if you eat things you shouldn't containing fat it could affect your op, as if we dont follow the diet strictly here 2 shrink the liver they start surgery see the liver is enlarged and abandon surgery thats what keeps me going ) . Im on my 5th and final week of my pre op diet due for surgery next tues 14th, i just have to stay focused till then, your body gradually gets use to the lack of food i had migraines for days, a grumpy moo for days lol god help ppl around me and starving was totally the word for me haha! By about the 4th day my stomach had shrunk a little and it got easier the hardest part for me is preparing my childrens dinner knowing i cant have none. I have lost 19kilo's on my pre op 40lbs which has shocked me as i really didnt think i could do this, i wish you the best of luck