You should always start your preparation by analysing your strengths and weaknesses.
This will help you in planning your efforts efficiently.
Following are some of the basic strengths which will enable a candidate to sail across CAT:
1.Has a decent reading speed
2.Good at solving puzzles
3.Has a decent grammatical aptitude
4.Ability to analyze, understand and adapt to a new situation very fast
5.Ability to take right decisions in lest amount of time
6.Ability to cope with the time pressure by proper time management
7.Most importantly ability to choose questions in a smart way, as per his strengths.
You need to work on the skills mentioned above and try to develop them within yourself.
"Twenty years from now you will be more disappointed by the things you didn't do than by the ones you did do. So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover."