CAT is not about intellenge or hard work..its more about smart work..knowing your strengths and weaknesses.
You are in no way going to attempt 150 questions in 2 hrs. So the whole funda is to find out what you will can attempt with better accuracy and speed. Do a SWOT analysis of yourself during mock CATs and if your analysis is right factor in a strategy for the final CAT.
Believe me ..if you understand yourself...you are in..