Be extra cautious in the first 10 questions. However, also remember that every question is important.
Do not get stuck with on one question for too long. Don’t let few difficult questions on GMAT decide the fate of your entire score.
If you think that the questions are difficult, you are doing well.
If you think that you are not doing well, take a deep breath and try to have a fresh start from that instance; don’t mull over past.
Make sure to attempt all questions.
If you’re running really short of time on verbal, randomly mark last RC.
Avail all breaks. Carry juice and chocolates with you…it’s a long test, stay energized.
The staff at the test center would be very strict and the level of scrutiny would make you feel that you are in the IFB headquarters. Don’t let these factors affect your concentration.