Kim Wilkins (aka Kimberley Freeman) needs to write 30,000 words a month for four months to finish her next novel, as well as balance life/holidays/kids. She's experimenting with strategies to keep herself writing, and sharing her progress on her blog. Coincidentally, the first month is NaNoWriMo month, and that event has a 30,000 word goal, too.* [UPDATE 7 Nov: Coincidentally, I don't know what I'm talking about. As Catana points out in the comments, NaNo is 50,000 words]
So I need strategies, and over the summer, for the benefit of all mankind (at least those who write), I’m going to be trying out a range of strategies to make “keep going” a reality. See, for example, the photo of my notebook here [...]. There are twenty-five numbers in the table, and combined they add up to 30 000 (my goal for November). On 25 of the 30 days of November, I have to pick a number and write that much. There are small amounts, for days when I am tightly scheduled, and big amounts for when I have the luxury of time.
Keep an eye out over there to see if any of her strategies suits your writing style: http://fantasticthoughts.wordpress.com/2012/11/01/keeping-going-is-sometimes-super-hard/
*Yes, I realise I wrote 'National Novel Writing Month month'.