One week to surgery

One week to go, I'm hoping that after nearly 40 years of dieting (unsuccessfully obviously) that I may have the solution. I feel that I have been in a battle with food for ever, and never feel full or content. I'm hoping that this will provide the answer. I don't want to be skinny just to be able to go into regular shops and buy clothes, and to be able to book to go on a plane or to the theatre without worrying if I'll manage to sit comfortably or do the belt up.