Viktor Frankl's account of his time in Nazi concentration camps, and his exploration of the human will to find meaning in spite of the worst adversity. Haidt identifies Frankl as one of the early pioneers of research in posttraumatic growth.
Ted Talk: The Best Gift I Ever Survived, Stacey Kramer 2010 (3:02)
Marketing strategist Stacey Kramer offers a 3-minute parable that shows how an unwanted experience -- frightening, traumatic, costly -- can turn out to be a priceless gift.
In this article in the journal Daedalus, Haidt & Joseph Craig present a general theory of where morality comes from, and why sets of virtues differ across cultures, even though the foundations of morality are universal.
This journal article (2001) presents the longitudinal study Haidt mentions that found when a person increased volunteer work, all measures of happiness and well-being increased, especially in the elderly.
Explains how individuals can integrate the different facets of themselves to achieve "optimal human being" and how researchers can integrate different levels of analysis within the human sciences to understand "optimal human being" in general.