Here we are, Day 28, and the word count goal is 46,666. If you're close, but not there yet, then this is the time for final pushes. Reach down deep, grab the beating heart of the writer inside you, spike it down onto the floor, and go for the finish line.
As for me, I'm sitting at 48,119 words and I couldn't be happier. This progress leaves me especially happy considering that my first NaNo year left me writing over 10,000 words on November 30th, but by God I was finishing that sucker.
Learning from that old frustration, I'll actually hit 50K either tonight or tomorrow and that is just as great a feeling as powering through up until midnight on the 30th.
As you work, make sure you backup your story, turn on some motivational music, and get the words down on the page. This isn't the time for taking a few hours to think about the plot, this is the time to push and push hard.
Also, don't forget to validate your word count when you reach the finish line (find this under "edit your novel"), and pat yourself on the back.
Are you sailing on through or busting your butt?