"Tragedies later had a greater impact on his life, he says, including the loss of his father to suicide and his teenage sister to illness. “A rejection letter doesn’t even come close to losing loved ones in your family. That is the hard stuff to survive,” Mr. Turner says. “I want to be sure to make this point: I did everything I did without a college degree,” he says. While it is better to have one, “you can be successful without it."