Happiness interview: John Tierney. I’m a big fan of John Tierney’s science column, Findings, in the New York Times. And I’m even a bigger fan of his new book, Willpower: Rediscovering the Greatest Human Strength. This book, co-written with Roy Baumeister, who is one of the most prominent researchers of self-control, is fascinating. For anyone who wants to be happier, …

