I'm on my 18th day of the liquid pre-op diet, my surgery is tomorrow morning. Some days were harder when I had to cook for my husband and toddler and could smell the food but not taste it, but as I was told by the nutritionist and my surgeon's nurse, the pre-op liquid diet is not just a liver shrinking diet, it's a habit breaking one. I haven't cheated at all these past 18 days, and feel that much more confident I can change my lifestyle forever after being given this tool.
It's pretty much a test that you can control your cravings and urges to eat as you won't be able to do so after without feeling sick, or worse, causing complications if you do it right after your procedure. I'd suggest whenever you start craving something, walk away and remember WHY you're doing this surgery and how important it is to follow your doctor's plans. Don't think that you want to cheat again, you gotta be hard on yourself at those times. You can do it!