Fickle Muse: ROW80 Update

Years ago when writing a book was an unfulfilled dream, I thought I would sit down one day and a flurry of words would rush out. Then, the next day and the next until a book was done. 
After all, if the idea was there, what would stop me from writing?
Many of my writer friends have other full-time jobs, plus kids, plus spouses. I would read their ROW80 updates and cringe. They were doing all of that AND staying on top of their wordcount goals.
I could have cleared a whole day, managed to get all my kids to school, be healthy... and still no words. *sigh*
The older I get, the more I'm trying to accept who I am. And I am someone who needs a deadline. The worst thing someone can do is give me an assignment and say, "Just get to it whenever you can." Whenever quickly turns to never when faced with a pile of commitment. At least for me. I have too many fires to put out on any given day.
As soon as I get through the June 10, 2013 publication date for Chasing Memories and my summer move to California, I'm going to set some deadlines for Book 2. Then, I'll get it to my editor. Once I do that, she'll keep me on task. 
How do you motivate yourself to just keep writing?
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A Round of Words in 80 Days (ROW80) Update
* Totally focused on the upcoming publication of Chasing Memories* Working on marketing materials* Planning promotions
I could still use some help with my cover reveal tour for Chasing Memories. Dates are available 5/23-30, and I will send you all the details. 
If you can help, please visit the sign up form here.