Arts
In his book Fooling Houdini: Magicians, Mentalists, Math Geeks, and the Hidden Powers of the Mind (reviewed here), Alex Stone starts by recounting his tragically humiliating disqualification at an international magic competition. So ashamed was he by the unceremonious ejection from the stage that he gave up magic and pursued a post-grad degree in physics. Eventually the lure of the conjuring arts called him back, but this time around, Stone got serious. He sought mentors, practiced incessantly, researched magic history, and read up on the psychology of deception and the limits of human perception.