You can’t avoid it. Every exam prep checklist has it, and every experienced tutor will advise you to do it: study! Yes, we all hate to have to do it, but it really is the key to your success on every exam you’ll have to take.
But, the fact is, even after you’ve studied all you can for whatever test you have coming up, you’re not guaranteed success. You might have heard stories of a classmate who crumbled under the pressure of studying for a test, or who slept right through his alarm on the morning of the test, or who ran out of energy and collapsed right on top of her desk during the exam. It really could happen to anyone!