I have a sort of opposite problem currently. For my history personal study, I wrote out my main arguments, word checked it and it was 3900 words - with the limit being 3000 maximum, and I hadn't even done the introduction and conclusion. So I've spent a few frustrating hours cutting down 1400 words, it has been driving me mad, as I think it sounded so much better with them all in!
I think for me, the worst point with an essay, is planning. It's ok gathering the info, and great when you've finished, but the doing all the planning on paper can be so demoralising.