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For me it's not just about "winning" NaNo -- it's about indulging your inner writer. Allowing yourself to focus on writing, to daydream about story, to put off the chores and find extra time to write. To me, if you end NaNo energized, head spinning with ideas -- that's a win.
HOWEVER, if you did happen to hit that 50k word goal and "win" this year, there are some perks :)
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With Scrivener, all that's now in one place. It's just like each Scrivener file is a big box holding EVERYTHING having to do with that book: all the notes, all the drafts, all the words, all the thoughts, all the images. Plus, it's incredibly stable -- it autosaves every few seconds and to date I've never lost anything I've written (knock on wood!).
I know that for a lot of people, their first look at Scrivener can be overwhelming because there are SO many tools and options. But really, the only thing you need to learn how to do is create a doc, and start typing. All that other stuff is just there if you want to use it. For example, it has a great notecard system -- I don't use it. I'm not a notecarder, so I ignore it. I have friends, however, who LOVE the notecards but hate the snapshot function (I'm not sure how JP and I could have co-written our MG without the snapshot function!).
Anyway, all of that is to say that if you "won" NaNo (or even if you didn't!), you should check out Scrivener. I'm pretty sure they still offer a free trial if you want to test drive it. And you don't actually have to start out with a new project. I began using Scrivener in the middle of The Dead-Tossed Waves and I just imported that manuscript and separated it out by hand (took about 30 min). Good thing, too, that program seriously saved my sanity when it came to editing that book - lol!
So, to all of you out there who drafted 50k words in November and "won" NaNo: Congrats! Go claim your prizes! To everyone else who participated in NaNo but didn't hit that 50k goal, I still consider you a winner because you spent a month writing :) So here's a prize for you: a free copy of my zombie short story Flotsam & Jetsam.
Now, just because November's over doesn't mean it's time to stop writing :)