I force myself to write five pages a day. No matter if they are good, bad, ugly or not even fit for burning. Nothing specific, just something, even if it is the lyrics to a song that is running through my mind at the time, or a conversation that I had earlier in the day that I wish I could of responded a different way.
Actually i think that's a good plan. I've done the same only I extended to research so that I was actively working on my project until I got way laid by others. I have to do so much writing for work, there's not much time left for personal projects.