Man I f***g hate taking tests! Always top 10% in my school years, but those tests always messed with my head. Not sure if it was because I studied too much or because I got nervous watching the time or hearing other's breeze through the testing faster than me. I mean am I the only one that hates ASMR or "white noise"... the clock ticking, the keyboards and mouse clicking, the pencil scribbling - all drove me CRAZY! And why are people finishing already and I'm still on question 10??? Seriously though. I always had a problem focusing when it came to test time. Could it be that you know the material, but you just don't do so well with tests? Best advice I can give you is to clear you're schedule for the next couple of week's, one before the test and one after ... that way you are not worried about what need's to be done right before or soon after the test. You just need to relax and be able to get a good night's rest.
As far as what material you need to focus on to pass the test, sometimes these questions are worded poorly (or tricky) that even if you know the material, the answer can be quite confusing. Double-negative true-false questions, two multiple choice questions that look like the same answer, etc. need I say more. In these situations, a good strategy is process of elimination. Read the question slowly and if you can eliminate the wrong answers then you have increased your chances by 75-100% at getting the right answer.
Because I am terrible at taking exams, I found Compucram's practice sessions helped me out a lot. It's not that it taught me anything new, but I guess it just helped me with dealing with the actual pressure of taking the test itself. I don't know anybody that passed the first time. Second time was also not uncommon for some of my peers. One thing here in Texas though, after failing the third time you will be required to take classes again so if that happens (and I don't want to discourage you) you may want to reconsider if this is the right career path for you or if it is even worth it to invest more time and money into this profession. Maybe stay in the real estate industry but try again later after gaining more experience.
Good luck and I hope you do pass!