This post, of course, is based off of what is going on with my novel right now. :)
So I am nearing the end of my novel. Ecstatic excitement is rushing through my veins: I can almost taste the fresh breeze of triumphant victory and accomplishment. The characters are moving: the chess board is set. Battles are about to be fought: blinding light versus pitch blackness. Epic. >_>
But don't lose your head. I am practically dizzy with excitement: but don't rush the ending. Just because you are almost done with a novel doesn't give you leave to rush the plot. Keep it smooth and consistent with the rest of your writing.
There is, of course, the dangers of procrastination. It is less noticeable with all the hubbub sweeping your brain, but nonetheless, small parts of you want to say, "I'll do it tomorrow. I can finish it later, right? Never put off til tomorrow what you can do the day after tomorrow, as the saying goes." Do you know what you do then? You shut them up. Gag them, bind them, and throw them in a familiar-looking pit (wait: didn't my MC spend some time there?).
Does that mean celebrating is bad? Of course not. In fact, celebration is another way to kick yourself in the pants (or dress) and remind yourself what you are celebrating. "I am celebrating a high word count: why am I not writing a higher one?!"
The main point is: keep yourself under control and throw procrastination into a pit. ;)