Billionaires tend to give one bad piece of career advice, according to self-made millionaire and bestselling author Scott Galloway: Follow your passion. "The worst advice the billionaires give is 'follow your passion,'" Galloway, a serial entrepreneur and New York University marketing professor, told LinkedIn's "The Path" video series in an episode that published on June 3. "Anyone who tells you to follow your passion is already rich." Born in Los Angeles to a single mother, Galloway said that his family's income never exceeded $40,000 during his childhood, and that he thought his passion for athletics would bring him financial freedom....