the problem lie not in the books but teh kind of preparation u r doing. U have to understand dat those who cleared hve also read frm teh same buks as u did and as curently doing.
jst make sure wen u sit to study, wat u r giong to do is not to solve the question but 2 gain the attitude to solve it. People may write off tones of books by doing practice of them, but still find it difficult to do the same in exam.
Analyse ur past three papers for a subject @ the begening u sit to start, think of the time when u were sitting in teh exam & was giving it .solve it at home. see whether u can solve it in toto. if u can, then believe, dere is no problem regading ur practice but u shud try making urself confortable with the exam environment....!!!!!!
.