I have definitely been there and done that when it comes to test preparation. I am reminded of this again as I get ready to take a state teaching test that will determine whether or not I can become an administrator. No pressure right?!
One of the first things I try to do is find some sort of pre-test and gauge where I am exactly in the grand scheme of things. For example, for this test I have coming up in 3 weeks, my first pre-test I very quickly hurried through, skimming most of the questions, and I got a 65%. Ouch. The next time I took it, about 2 weeks later, I took my time and made sure I didn't have any distractions, and I got an 80%. Much better. I needed that boost of confidence. Plus, I now had 2 pretests for me to compare and figure out where exactly I was having struggles. I realized I needed to do research on state education statutes and some case law. Cool. I can do that.
My point is this: Any time you are facing a big test, there is always going to be preparation involved. Find a pre-test. Search for tutoring or information that can assist you in getting ready. Don't just rush through the preparation; take your time and really put forth your best effort. Analyze exactly how you did and where you were tripped up as this will direct your preparation in a more focused manner. Finally, get lots of rest and eat well the night before. I like to dress more professionally whenever I'm taking something like this, because I feel like I perform better when I think I look the part: successful.
Much luck to everyone as you are facing big tests and end-of-course exams. I will let you know how my test turns out!