A favorite professor in graduate school advised my class to "read widely," advice I try to take. He also advised us to keep a journal, which is something I don't do (yet).
What I've been reading recently:
The Klipfish Code by Mary Casanova: An upper-elementary adventure book, focused on the resistance of the Norwegian people against the Nazis during WWII. I actually stayed up late reading it.
Predictably Irrational by Dan Ariely: Dan Ariely is a regular commentator on NPR's Marketplace. He writes about behavioral economics--why, for instance, is the idea of "free" merchandise so compelling, even when an overall discount might save us more? Teachers and students should all read the chapter about procrastination.
Tee Time in Berzerkistan by Doonesbury: Honestly, Doonesbury seems even more prescient when you read the cartoons looking back in time.
Also, I've been reading several mysteries--I'm enjoying a series set in Maine by Sarah Graves--as well as the fabulous monthly "newsmagazine," Funny Times.