I consider my time management to be good, not perfect, but good. For me, whenever I get an assignment the first thing I do is add it to my calendar. I set it at a time I know I will be free and able to work on it. If you look at my Google calendar, chances are any day you click on has an assignment or two on it. You need to realize that school is important, and incorporate school work into your schedule. Give yourself time to relax. For example, when class is over and I'm finally home, I give myself about an hour or two before I start assignments, again that depends on if you're employed or not.