Hello there... Please ponder on the following before taking a decision:
- Do you have excellent English vocabulary?
- Do you have excellent analytical skills?
- Are you super good in Math - the kind asked in CAT?
- Are you single minded about achieving things in a focused manner?
If you answer is YES to all the above..... then definitely go ahead, quit your job & prepare for CAT.
CAT is a very tough and competitive exam that requires very rigorous preparations even if you are good in Maths, Analytical ability and English. To crack it, focused preparation and the will to put in that extra effort for the reward is required; this will happen only if you quit and dedicate to CAT.
But if you are half hearted about your goal of CAT or if you need to financially support your family then, prepare for 4 -5 hours every day for at least 3 months, take some CAT practise tests, time yourself and then decide on your course of action.