I know that waiting is the hardest, especially those waiting for insurance approval. Some of what I would suggest has already been mentioned: support group is a wonderful idea. I started going to them probably six months before surgery. You meet people at all stages pre and post op, some who are thinking about it and want more information, others with issues they want to share, and successes. It really helps. Read as much as you can, here, at Lapband.com, or books (I have two, The Lapband Solution and The Lapband Companion, both available on amazon.com), and read here. Here you will read the good, bad, and ugly. I was so ready by my surgery date I joked that I could probably do the procedure on myself.
It is normal to have mixed emotions. You are taking a big step towards a healthier life. I have gone from taking 2 BP meds, 2 cholesterol meds, a reflux med, and pain med for my knee arthritis to 1 BP med, 0 cholesterol med, pain med as needed. In clothing I have gone from 2X or Women's 22 to Small-Medium and size 10 Misses. Other than being broke from buying clothes, it has been so worth it. My problem was portion control. Even if I ate something healthy I ate too much. The band has helped me curb the quantity, making it easier to eat good stuff, just less of everything.
Hang in there!