tired

I am so phenomenonlly tired. So worn out and worn down that I am unsure how to get through the rest of the day. Grad school is really busy with classes and assignments in prepartation for Thanksgiving break. So class last Saturday, class last night, and class again this Saturday is enough to make me done - so done. My paper is not quite done, not quite right, and I don't know if I can find the energy to get it done. But since when did that matter?