From this column on productive forms of procrastination I liked the approach to getting stuff written adopted by Raymond Chandler:
Chandler... develop[ed] a strategy that Roy F. Baumeister, a social psychologist at Florida State... calls the Nothing Alternative. Chandler forced himself to write detective stories by setting aside four hours a day and following two rules:
a) You don't have to write.
b) You can't do anything else.
"It's the same principle as keeping order in a school," Chandler explained. "If you make the pupils behave, they will learn something just to keep from being bored."
I won't say it's a strategy I've consciously adopted, but it does remind me of some blogging days.