By Marianne Clyde Do people shake their heads when you talk about what inspires you? Do they think your dreams are far fetched or outlandish? Or selfish? Unreasonable? Do they tell you you should just relax at this time of your life? Do they laugh at you? Take a moment to think of some others who people shook their heads at… Sara Blakely (1971–) The founder of Spanx pitched her idea for footless...