Laurie Halse Anderson
I'm a morning writer. And if I can get a good morning in, and I'm at home, I can successfully ignore all of my other responsibilities and write all day long and half the night, if I have enough coffee.
I start the day with the project that requires the most concentration. As my super-laser focus fades (after lunch usually) I'll shift into projects that needs more daydreaming energy.
All of this, of course, assumes that I'm home, which I am not often enough. The biggest challenge for me these days is the constant balancing act of travel (for book tour, speaking at conferences, etc) and staying at home to write. I'm an introvert, so while I enjoy the travel and speaking, it TOTALLY drains me, so it takes a while to recover after I get home.
But I'm trying to figure out how to squeeze writing into my road trip schedules. That would be the best of both worlds.