The very first thing to address is when to begin. You must start the process with at least a full night’s sleep between you and the exam. Your brain needs time to subconsciously digest everything you’ve put into it, so you cannot try to cram it all in an hour or two before the exam. The best time to start the process is between the morning and early afternoon of the day before your exam, a good 24-36 hours prior to the start of the test.