My final weeks were filled with simulated tests. I would start with 2 AWA, then a challenge from gmatclub.com, and finish with GWD verbal. I had around 14 sets of this kind in three weeks. In the last week before the test, I had three Manhattan GMAT practice tests.
As the exam approached, I wrote down a list that contains notes on the strategy of approaching each section of test. For example, on CR, I wrote "identify the conclusion and premises of the argument," and on RC "pay attention to shift of scope and subjects." I would review the list every time before I did the practice test. On the test day, I did not bring the notes but simply thought about them during the breaks. This indeed helped me focus on taking care of the test instead of worried about the score.
Four days before the test, I suffered insomnia and could barely fall asleep for two days. Afterwards, I stopped studying at night, ate more vegetables and made myself as relaxed as possible before sleep. Otherwise I would not do well on the 9AM exam.
The key to success is believing in yourself. If you believe in yourself, you will be able to cherry-pick a tailor-made strategy of studying GMAT after going through opinions posted by former test takers. If you believe in yourself, you will be able to feel relaxed yet focused before the test.
The key to success is tenacity. If you are tenacious, you will be able to regroup yourself and concentrate on analyzing weaknesses after finishing a GWD set badly. If you are tenacious, you can treat the bulk of practices calmly, rather than anxiously.