Commonly experienced at university where there is a frequent need to produce large bodies of work on boring subjects.
What do the tutors comments say?
"Constant spelling errors throughout. Totally detracted from the subject, essay does not make any sense."
Dude, didn't you proof read that shit? We had weeks to do it.
Didn't finish the first draft until 2 minutes before the deadline. Had to smoke crack all night just to stay awake and finish it.
Sounds like you suffered a serious case of correctile disfunction.