I was so nervous because of the risks associated with the lapband surgery, but at the end of the day -- your quality of life if you lose the weight will be so much better. You'll put less strain on your heart for sure, which could extend your lifespan by years.
Certainly there's short-term risks and long-term risks and worries with any procedure, but for me, it will be so worth it if I can just get through the hurdles I need to get through. Good luck! I'm sure you'll do wonderfully! Just pay attention to what the doctors say, make sure you're at least getting Protein and Vitamins in, and you'll be fine.