Henry Winkler, who was launched into prominence as “The Fonz” in “Happy Days,” has transcended the role that made him who he is. In this achingly vulnerable memoir, Henry shares the disheartening truth of his childhood, the difficulties of a life with severe dyslexia, the pressures of a role that takes on a life of its own, and the path forward once your wildest dream seems behind you. Since the glorious era of “Happy Days” fame, Henry has endeared himself to a new generation with roles in such adored shows as “Arrested Development,” “Parks and Recreation” and “Barry,” where he’s been revealed as an actor with immense depth and pathos, a departure from the period of his life when he was so distinctly typecast as The Fonz, he could hardly find work.