John Mackey has been the CEO of Whole Foods Market for over forty years. He founded the company in 1978 and has transitioned the business from a health food store to an upscale grocery juggernaut. Three years ago, he sold his company to Amazon for $13.4B but still remains at the helm. Mackey discusses how he's navigated the grocer through ups and downs, including the COVID-19 crisis, and tells us when he might step down.