Her 1989 book Mindfulness, summarizing a decade of ingenious experiments, became an instant classic. Now, in her new book, Counterclockwise, with more of those experiments under her belt, she presents a more thoughtful and thorough look at the power of mindful thinking: "the simple process of actively drawing distinctions."

Counterclockwise: Mindful Health and the Power of Possibility
by Ellen J. Langer.
Random House, 2009 ($25)