"The Willpower Instinct: How Self-Control Works, Why It Matters, and What You Can Do to Get More of It". Book by Kelly McGonigal, www.businessinsider.com. December 29, 2011.
"A Lesson on Elementary, Worldly Wisdom as it Relates to Investment Management and Business". Charlie Munger's lecture to the students at the University of Southern California in Los Angeles, 1994.