In order to pass, you must calm your nerves. Sorry but it's an unfortunate reality. The exams, thought I can't specifically speak on AUD since I haven't taken it yet, are difficult because of the breadth of material. In order to do well, you must have a clear mind and be able to read the questions carefully and think clearly. Some questions will be awkwardly worded or ask things in a way that is unfamiliar, and in order to get things correct you have to think clearly and be able to eliminate answer choices to improve your chances. I am just about to begin studying AUD, but assume it will be similar to the others.
At this point, it's your first exam, so I completely understand the nerves. I was a wreck before I took BEC. But once you get into the testing center, you have to put your game face on and go for it 100%. No room for panicking and worrying and crying. Tomorrow's the day to do your best. Either way, if you pass then celebrate. If you don't, then you will come out having been through the experience and seeing how not so terrible it really is. I still get nervous on my exams, but you have to remember your prep and go for the gold!
Since it's the day before, I would suggest re-reading the notes and reviewing all the basic topics. Make sure you understand all the basic and important ideas, so that when you get to a difficult or confusing question, you have something to think back on. Hope this helps. Good luck!
BEC 86 (08/30/11)
FAR 84 (10/13/11)
REG 88 (11/08/11)
AUD 86 (11/29/11)
Exam prep - Becker self-study