Ion_Exchange:
Believe me, I feel your pain as I have been there before.....heck three times to be exact...ouch! I tell you this without studying the material, it's almost impossible to pass, which I think you already know. You just have to give up your life, basically, and find a quiet place---- like closet or a basement or underground bunker----- and hibernate for the duration of your studies. You will then come out every now and then for only food, work or water, then back into that dark lonely space.
Seriously, you have to train yourself, little by little, and dedicate the time and effort into studying and doing practice problems and exams over and over and over again, without watching TV shows or hanging out with friends anymore---- until after the test. This is the only way to get a passing grade, at least in my case. You will noticed that after a few days/week of doing working problems, your brain will start adapting to this new lifestyle of living; that how the brains works. In a few months the exam will be over and then comes you life back, the way you liked it. Believe me, the small sacrifice that you're are making now is nothing compared to the rest of your life not having to hibernate and study anymore.
Good luck