Obsession with twngan

Yeah, hell is the only word that I can think of. I have read most of the textbooks I have, some of them twice, a stack of papers to complement, and countless notes with related information I found all over the world, yet I still feel that I don't know enough to survive through the exam. Now the exam is less than 5 days away, the only thing that can rescure me is bs, a technique that I have some but not too much. My destination? Dare not to think...