Hi,
I have had many of the very same feelings. I am trying to not think of this as a pass fail kind of the situation. I am doing my best to look at it as if this is the one, this is the time that I will be successful. I have gone through the majority of my life feeling like I am not good enough and that was why I was not succeeding in weight loss, but this hope I have for the lap band has given my the permission I needed to be happy about the surgery more than fear it or worry that it wont be as successful as I want it to be. I think I am finally in the mindset that ANY loss will be a success and something to be proud of.
I hope everything works out great for you!