If you really do want to be an actor who can satisfy himself and his audience, you need to be vulnerable.
Jack LemmonPart of an actor's job is to actually adopt the world-view of the character she is playing and to tell the story from that vantage point. If an actor represses large aspects of their personality, they will have a severely limited range and castability. Great actors cultivate effortless access to their subpersonalities. Many acting teachers call this 'freeing your instrument.'
Jack Lemmon