I can understand why you would be scared...surgery is a big undertaking for anyone. Just make sure that you get all your qestions answered and know what you need to do to take care of yourself afterward, that should help ease your mind and make you feel more confident. Do you have anyone who can help take care of you after the surgery? And if you do, make sure they are clear on what you will need as far as care goes. All I can say after that, is to put your trust in your surgeons and leave all the rest to God, He will see you through. And you can always count on us for support.
Best wishes to you and I will keep you in my prayers.