Hi anubhav31,
Many Test Takers find the GMAT to be challenging - on a mental, physical and psychological level - so you're not alone. The GMAT is a consistent, predictable Exam though - so you CAN train to score at a higher level. Part of that training involves making necessary changes to your routine though (including how you 'see' and respond to the Exam). Before I can offer you the specific advice that you’re looking for, it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) How long have you studied? How many hours do you typically study each week?
2) What study materials have you used so far?
3) On what dates did you take EACH of your CATs/mocks and how did you score on EACH (including the Quant and Verbal Scaled Scores for EACH)?
Goals:
4) What is your overall goal score?
5) When are you planning to take the GMAT?
6) When are you planning to apply to Business School?
7) What Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich