I always write out of a need to read something, rather than a need to write something.
I try to squeeze in a workout whenever I can, even if it's doing squats with my 7-month-old in the kitchen or jumping on the trampoline with my 5-year-old.
The Sookie Stackhouse novels were selling well before the TV show, but the TV show led to a lot more exposure and readers. And a lot went on to read my other work. It was a wonderful thing for my bank account.