"The greatest discovery of my generation is that human beings can alter their lives by altering their attitudes of mind." — William James, father of American psychology Can a belief change your life? Most of us would answer, "Of course." If I believe I can learn, I am more likely to try. If I believe people are trustworthy, I am more likely to reach out. If I believe my actions matter, I am more likely to act. But Shawn Achor, one of the world's leading positive psychology re
