College work can always seem more ovewhelming than it is. Once you get going on things, it's amazing how quickly they can fall together.
I have readings piling up one me like crazy and I'm not exactly in the mood to read them, but once I start I can take care of at least the main stuff, and not worry so much about the secondary materials.
Remember with essays that nobody is expecting perfection. A good prof/instructor will expect mistakes, and is looking more for an effort to make a coherent argument and write it well. I received a high grade on an essay last semester in which I made a statement that turned out to be completely and utterly false. The prof said he liked the rest of the essay and the worked I put into it, and since this was my first semester in grad school he let it slide.
So don't worry about perfection. You can just get going on your work and do the best you can.