A new book, "The Power of Habit: Why We Do What We Do in Life and Business," by New York Times writer Charles Duhigg, devotes an entire chapter to Paul O'Neill and his safety campaign. Using stories and research from the fields of psychology and neuroscience, Mr. Duhigg argues that much of our lives is ruled by unconscious habits, good and bad, but that by becoming consciously aware of the cues that trigger our habits and the rewards they provide, we can change bad practices into good ones.