My dear Friend,
Why you are thinking to leave CA. You are the person who have cleared the foundation level, Intermediate level and also one group of CA Final means you are one group away to become a CA ( i.e., Chartered Accountant). You have the potential to clear the exam that's why you are here.( in Final)
There are so many students who are not able to clear their CPT exam since 2011 and still he is giving the exam, If any one say to him to leave this course join another course, he replied i will clear this exam.
Truly speaking, So many peoples who have given around 8-9 attempt in CA-Final and they were not able to clear even Single group. I am saying to you brother do not think to leave CA you will 200% clear the exam and become a reputed , Knowledgeable CA.
!! Best of Luck !!