Greg McKeown, the guest on this week’s episode of All In, has taught the principles of “essentialism” to some of the biggest and most successful companies in the world, including Apple and Google. His writings have been published in Fortune, Politico, and Harvard Business Review, among others. But he is also a husband, father and former Latter-day Saint bishop who seeks to apply in his own life the principles that he says are found on nearly every page of scripture.