DON'T STUDY TODAY (THURSDAY) UNLESS YOU FEEL LIKE YOU ABSOLUTELY NEED TO! Take the day off -- relax, watch a movie, hit the gym. Try your best to get the DAT off your mind. I've always believed that if you don't know something the day before, you're not going to know it when the time comes. (on big tests like the DAT, however, some exams you can cram the night before for in college)
Lastly, watch this video the morning of your test.