“In identifying one’s mental state as the prime factor in achieving happiness, of course that doesn’t deny that our basic physical needs for food, clothing, and shelter must be met. But once these basic needs are met, the message is clear: we don’t need more money, we don’t need greater success or fame, we don’t need the perfect body or even the perfect mate—right now, at this very moment, we have a mind, which is all the basic equipment we need to achieve complete happiness.”