I think , u given 11 attempts that shows while u r studying, other unwanted things going into ur mind ..if it is the case, our concentration on the subject will disturb a lot, so just do meditation for 10 min nd then start ur study its helpful to u....iam telling this u bcz while iam reading so many things comes into my mind...inorder to overcome this i am doing the same thing.....
nd also My Advise is to take coaching in a good institute its better for ur may 2013 attempt bcz u resived the chapters so many times that's why while sir teaching the lessons to u. u will have some confident bcz u know that subject very well nd that confidence keeps u to answer to the questions quickly which r asked by the sir in the class . Also follow the books of anyone author i.e..Don't read 2 or more author books of a single subject(it helped me alot in exams bcz no confusion exists nd also when u attempting a question in an exam which u already read in the book ,definately u get the image of that answer in ur mind nd the place where it is presented in the book, its helpful to present the answer in the exam) If u do this u can definately pass with good marks.
Did ur job perfectly, don't give the space in ur life for fear
Hope u will definately succeed in your may attempt....ALL THE BEST to ur may attempt and CONGRATS IN ADVANCE