main problem regarding your study is your laziness... and to be honest .... You are not sure of your success by yourself .... You have already declared yourself fail ... ( Sorry for being too straight forward)
just because due to this you are more focused on future ...as because it's easy to dream rather than working towards goal ...
this kind of problem can happen with me with you and even with anyone .......
1. First change your place of reading.
i.e I read with full concentration when I am reading on stairs on my home ... but such thing don't happen while laying on bed or sitting on chair ... So find where you are fully devoted towards study.
2. be realistic :-
All ur dreams are waste unless you don't clear your CA ... Job n practice will follow this ultimately.
3.Focus on Imp :-
days are less. So focusing on important will bring you some confidence that you can do good and get passed in CA final exams.
Once you gain the enough confidence such thoughts won't disturb you anymore.
4. Failure feeling ....
And whenever you feel low or such lazy ......then just ask from yourself Do you really regret being a failure .... or just enjoying the Tag of being a faliure .......
And once again sorry if my words hurt ... as the same was not my intention. Good luck