Hey Donna, I think it is quite normal to feel a little apprehensive and even discouraged when you read certain things, especially as the day creeps closer but I think you have to try and focus on the positives.
I have been feeling a bit the same...then I take a moment to think about what I will feel like when I am thinner and healthier and how many other ways I've tried to do this previously that have failed. Then I start to feel more positive again. I think for me it is the fear of the unknown...but I am determined!
I think the really important thing is to seek support when you need it and not brave it out and don't feel stupid or embarrassed asking questions. Also if you can find a local support network of fellow banders it will give you the opportunity to speak to someone who has been/is going through what you are going through.