If you’ve ever dreamed of reinventing yourself, take inspiration from these three writers. Each one followed a traditional career path before turning the page to pick up pen & paper. Khaled Hosseini, once a doctor, became author of international bestseller “The Kite Runner.” Scott Turow, attorney at law, became the master of legal thrillers such as “Presumed Innocent.” And psychiatrist Charles Krauthammer became a Pulitzer Prize-winning newspaper and magazine columnist. Each speaks here about finding one’s true passion, and pursuing it with zeal.