I have an 8000 page dissertation due in on thursday
Oh do you really? How are you feeling about your 8000 page dissertation?
I feel numb. I did all my best to get this done but it's simply too much work for one person to handle
Feeling overwhelmed about your progress is understandable. Talk to your professor about an extension citing that different people write at difference speeds and you are struggling.
I can't. I have the final exam on Thursday and I have to focus on that.
Well as long as you study hard enough you will reap the rewards, I'm sure of it. Perhaps you should study with friends in your class as well.