I'm gonna give you a kick up the bum in a minute if you keep putting yourself down. This forum wouldn't exist if we didn't *all* need support, every single one of us. We all ask these questions, some of us pre-op, some of us post op.
It is one of the hardest things to get your head round and it goes completely against what all of us serial dieters were told. You are doing the right thing by asking for help, so stop knocking yourself. For this to succeed you've got to trust yourself to do the right things.
Good luck!