I just want to piggyback off this. I felt the same way after the first semester. It was such a "culture shock," if you will, because it was such a different way of thinking and the tests are like nothing you've ever taken during your pre-requisites. BUY AN NCLEX BOOK! I personally recommend Saunders Comprehensive Review for the NCLEX-RN® Examination which is in its 6th edition now. It provides both NCLEX review questions as well as comprehensive review of everything from A&P to fundamentals to assessment to everything else. And since Bunnybop mentioned care plans- do not be afraid of care plans. Yes, they're long and tedious, but I've learned so much in addition to my lectures just from what I've experienced and seen during clinical. They really made me dig further to understand the pathophysiology of each disease as well as the mechanism of action of the meds I was passing.
I agree with Bunnybop though, you can do it!