Personally, when I wake up in the morning I write out my "goals" for the day. I always mix it up.. for example:
bio flash cards
gchem destroyer 1-50
kaplan subject test ochem 1-3
Schaums two chapters
You get it... I just pick random stuff I need to work on and write it out and make myself finish it that day. I hope this helps....everybody has their own way, this just works for me.