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I respect and appreciate your candor and matter-of-factness. Though there've been other pieces, including Discovery Channel shows, about gastric-bypass surgery patients, none has articulated the "what I think I'll miss" issues as articulately and honestly as you have.
My hunch is that you'll find a new-girl righteousness and attitude that will carry you into your new life. Think about what you like and find ways to keep it (through clothing styles, body art, whatever). I hope you love the new girl as much as you appreciated the best of the old.