Play to your strengths:
1) I have a visual memory, so I try to get as much eye contact as possible. Since I have never created a flashcard in my life, this means seeing the definition next to the term in the book and using the location as a trigger for the memory. Only problem is that sometimes you know where on the page the answer is, but don't know the answer.
2) Be deliberate. Have you ever read an entire chapter and then thought to yourself "What the Hell did I just read?" You see the words, and subvocalize, without interpreting. Thus, instead of quickly tearing through a chapter, try to let each important fact sink in. This works for complicated concepts, but don't do it for the more tangential facts. In my experience, the less you focus on unimportant things, the more of them you will remember in the end. But if the material is difficult, focus hard.
3) Repetition. If you have a good routine, repeat it. Those tangential facts often make a large difference to a course grade, so you'll want to be exposed to the material at least several times. Still, if you are confused by the key concepts, don't dwell on the accessories.
4) Sleep never hurts. But I will tell you that if you can't sleep, drink one or two Red Bulls. There is no doubt that Red Bull sharpens your concentration, memory, creativity, and stamina. No, I do not work for Red Bull, but my roommate and I both (at Berkeley, so we're not full of s***) saved our asses with Red Bull. One time I pulled an all nighter before an Organic Chem final, so I needed two just to stay awake. It was as though I was just a detached observer, because my hand was writing answers that came seemingly from nowhere. I got a good grade, too.
5) Pretend you enjoy what you're doing. You think I genuinely enjoy anything I have to do for a grade? I dislike most everything, in fact. I have an innate disdain for most people, too. But I pretend to enjoy my fellow humans, and often get along nicely, or else I would never be successful. And if you pretend to enjoy studying, it might eventually become natural. There's a reason why some people have an encyclopedic knowledge of sports, but can't remember a single fact for a biology class.