I tried to look at my time of preparing to submit to insurance (which was my first hurdle) as a way to get my head wrapped around the idea that things are getting ready to rapidly change. The first month I tried to be more mindful of what I was eating and drinking and that led to a reduction in sugar consumption. The next month I gave up sugar for the most part, but allowed myself to have an indulgence now and again. I kept adding things month by month that I was watching, still allowing myself to indulge every once in an while if I chose to.
Funny thing was, because I was allowing those indulgences, I found I didn't need to take them as often. I've not had a diet work for me, ever, for long. I've been doing this for the past 6 months and am down 45 pounds as of this morning. And that is without seeming to really try.
Echoing Cammy, when you get the cravings, try to remind yourself of why you have taken this step towards WLS. Put up motivational sayings, or pictures, or whatever will remind you around the house. If you have a favorite outfit that you want to fit into again, pull it out so you can anticipate getting into it comfortably.
Also, come out here frequently to the boards. Knowing I'm not alone in my journey really helps me keep my head in the game. In these uncertain times, I'm taking it day by day and hour by hour. I choose not to indulge for right now; maybe later. Eventually, later is a lot later.
This is a lot longer winded than I anticipated, sorry if I'm rambling. I hope all the best for you in your journey and believe that you can be all you can be, one step at a time.
((HUGS))