Discipline - you have to be hyperaware of your thoughts so that when you're studying, you're trying to make sense of things by questioning the material and connecting what you know with what you don't know. You have you to be hyperaware so that you can catch yourself daydreaming and then redirect your concentration. Tips on redirecting your concentration is asking questions about the reading material, finding the answer and memorizing it, constantly. You must learn to develop a very loud internal monologue.
Find internal motivations: external motivations like money, clothes and cars are counterintuitive goals for internal tasks such as studying. To enjoy studying requires you to have goals that values and embraces self improvement and satisfying curiosity, the basic essence of which asks how did Earth come into existence and for what purpose am I living. If these questions are not important to you, you've got very external goals. You have to change your values from external enjoyments to more internal ones for you to really enjoy reading and studying. Given the amount of studying required to be a 4.0 or top 10% student, you have to enjoy studying to remain sane and content but not necessarily happy. Tips on internal goals: right before I begin studying, I tell myself (yes, I talk to myself) that if I am not competent with the material that I'm about to read then I am not fit to become an oral surgeon (a highly valued and worthwhile goal at the top of my list of life goals) and will never be a good clinician and therefore I may end up harming a patient (negative reinforcement). I also tell myself that during the times that I'm not studying, there is someone out there studying more than me and therefore becoming "better" than me (I'm capitalizing on my competitive tendency). Why do I do this? I do this to logically convince myself to study. While most college students were flippant with their time, I turned every hour of studying into a high stakes, lose or win all competition with myself. It was a strong motivator for me.
Time management: record how much time you spend on doing anything and then budget your time around studying. Record how long it takes you to volunteer, finish a lab report, read a chapter, hang out with friends, exercise. Always plan at least a day ahead of time so when you get up the next morning, you not only know what to do but you're also motivated to wake up. As you finish each task written in your agenda, cross them out. I find it euphoric to cross out each task and and see an entirely crossed out day in my agenda.
Sincerely,
a 3.9 student in college and top 10 dental student