A couple of good books, if you're looking for some inspiration (or a kick in the pants to get you out of a rut):

A More Beautiful Question, by Warren Berger
It was an impulse grab at the library. "…Because, whereas people are more likely to ignore or challenge you when you come at them with answers, they almost can't resist advising or helping you to answer a great question."

Small Message, Big Impact: The Elevator Speech Effect, by Terri Sjodin
Help organize your thoughts and be ready the next time opportunity knocks.