guys cmon lets be a little realistic and not get carried away by big words like confidence and commitment, etc.
CA Final needs time because it is hard work based and not intelligence based. Even if you are very smart, there is no option to sitting down and learning things especially in the Group2, like DT, IDT, and ISCA. Costing is practical and therefore doesnt need much time.
If one does not have a high IQ, then in my opinion, one needs around 8 hrs a day X 30 days X 2 months of study = 480 hours; less discounted for contingency and normal idle time = 350 hours.
This is just an estimate for an average student, please dont pounce on me with technicalities.
So if you have 2 hours a day, I think you should plan for about 175 days to study, which is around six months.