You have to believe in yourself, that's the secret. Even when I was in the orphanage, when I was roaming the street trying to find enough to eat, even then I thought of myself as the greatest actor in the world.
Source: In Reader's Digest, 1 Jan 1982.
-- Charlie Chaplin, (Apr 16 1889-1977), English actor, director, composer; He is considered the greatest comic actor of silent movies, e.g., The Kid, 1920 and The Gold Rush, 1924.