Figure out the time of day when you are most productive. Everyone has a time of day when energy is high and the brain just works without strain. Choose this as your study time if possible; you will always look forward to this time of day, rather than resenting it. Other times of the day, when your body and brain may be less in sync, can be devoted to tedious chores, reading or watching television, or going out with friends. Before you know it, you'll be accomplishing more each day than you expected.
Set goals and write them down. You need to set up a physical list of long-term goals, subdivided by short term goals that will help you to get there. Don't underestimate the importance of a written list; it's a concrete reminder of why you're here and where you're going.
Use those small blocks of time more effectively. You probably have portions of the day you spend just waiting. Use those wasted minutes to your advantage; take a book, outline for a paper or those forms you've been avoiding filling out. Work on them while waiting for a class to begin or waiting for an appointment.
Get a daily planner and prioritize. Write down significant dates throughout the semester, including major assignment due dates, midterm test dates and finals. Long-term projects are made up of many small steps. Using the time you have to do the small steps makes the big projects possible. Using every bit of spare time efficiently will make your goals easier and your years in college much happier and more productive.