A friend pointed out a yearly event to me called National Novel Writing Month (or "NaNoWriMo"). The concept is pretty simple: you sign up and during the month of November (starting on the 1st), you try to crank out a 50,000 word novel.
The goal is not to write a best seller, the goal is just to actually write that many words in that short amount of time. Yes, this means a good portion will be crap, but the fact that you've actually written something in a month as opposed to continuing to put off writing anything until you "have time to write" means that it will, theoretically, force you into a groove.
I have no illusions: this is going to be extremely tough. I haven't written anything of real length since college, but I always did my best (only?) work hours before deadlines. With a tangible deadline of November 30th, I'm hoping I'll get cracking (and hopefully sooner than hours before the 30th).
Besides, I figure I haven't really got anything to lose by giving it a go, and with at least one other person doing it with me, we'll be able to egg each other on.