hi bro
i believe in the past two year i have faced the same problem.i believe u r in such a state where u dont require a book.u just require some good couselling.u lack confidence.try these:---
1> nobody is born intelligent,it is just the hardwork that one puts brings good results.
2> promise urself that under all circumstances u will only put hard labour n not think about the results of iit or aieee.
3> believe in ur potential,there r some who r very good in physics but trust me they have achieved that only due to their deep interest in the subject.
4> if u have not joined any coaching institute atleast get urself enrolled 4 some test series(i believe fiitjee is a must)+some other too coz fiitjee tests begin almost at the end of the year.
5> when in comes to books,honestly arihant books r gr8.the theory part is excellent.i think it will help u to have a control on physics.
6> time management is an imp factor-give equal stress to pcm.
7> dont confuse urself too much with too many books.read few books and be a master of it.
rate me if u find useful.
one more thing-BEGIN TODAY AND STOP NOT B4 THE GOAL IS ACHIEVED.
ALL THE BEST