Sometimes a way to deal with the anxiety of something like surgery is to involve yourself in the details that you can control. For surgery, that can come from making certain you do all of the pre-op stuff that the doctors assign you. For braces, make sure you take care of the daily maintenance stuff that the orthodontist / oral surgeon tells you to do. The point is that you feel like you have some direct control of the output by doing your part.
If it comes to surgery then I suspect you might be on a liquid diet for a period afterward. Just remember that margaritas are liquid. ; ) (but don't really do that - alcohol has a blood thinning effect, and they'll likely tell you to avoid such things for a while)
Best of luck, and keep us posted.
Well my appointment with the orthodontist is on the second of february. And... i have been a thumb sucker until my late teens... which is a little bit awkward... but it also means, that the upper jaw is deformed. my lower jaw has been pushed back over the years so there is a good chance, i'll have surgery. and i'm over 18, so my health insurance isn't going to pay for my braces.