Jonathan David Haidt is an American social psychologist and author.

Jay Abraham is an American business executive, conference speaker, and author.

Born in 1987, **Ryan Holiday** transformed from a college dropout into one of America's most influential voices on ancient philosophy for modern living.

The 14th Dalai Lama was recognized at age two as the reincarnation of the 13th Dalai Lama. Following the 1959 Tibetan uprising, he escaped into exile in India, where he lives as a refugee. He has authored works including two autobiographies — My Land and My People (1962) and Freedom in Exile (1991) — as well as The Art of Happiness, a landmark book in the field of positive psychology.

Yuval Noah Harari is an Israeli medievalist, military historian, public intellectual, and popular science writer.

Mark Manson is an American self-help author and blogger..