Hi Sandy, welcome. That's exactly how I felt when I started considering this surgery. I thought I'd die if I couldn't have this or that favorite food or drink. Just for the record, there's nothing I don't eat or drink since the surgery, though I did have to lay off some favorites for a year or two. Your body goes through hormonal changes at the same time as your head is going through changes in discipline.
It's important to understand that a lot of what your brain says to you is CRAP. it's called "the fatbrain," it's the thing that drives you to eat by convincing you that you cannot live without Food X or Food Y or Z. When you decide to have the surgery, it's not an instant cure, but it's a really helpful step to help you succeed.
For all my fears about what I'd have to give up, the ways my life changed after surgery were like being born again into a paradise that included hiking and swimming and buying fabulous clothes and feeling comfortable socially and sexually. It's not magic. It takes time and work and there's a considerable amount of suffering. But if it wasn't worth it, you wouldn't be considering it right now. This procedure has save countless lives and the aesthetic bonus is just a small part of it.