Spanx has become the de facto brand name for an entire category. Like Kleenex or Q-tips. But in the ’90s, the shapewear company’s founder, Sara Blakely, was enduring relentless rejection as a door-to-door fax machine salesperson. When one day, she cut the feet off her pantyhose. This week we tell Blakely’s inspiring story, from being ridiculed for her idea to becoming a self-made billionaire.   See acast.com/privacy for privacy and opt-out information.