Well-meaning optimists often nudge us to believe that it’s never too late to discover (or rediscover) our respective callings in life (and sometimes they’re right). At a time when many of us may have given up on our dreams or settled for a less complicated way of life, there are those who may nevertheless eagerly follow such inspirational advice and find the experience refreshingly rejuvenating. But, even with the best of hopes and intentions, what’s the guarantee, if any, of success at such undertakings? Those are among the themes explored in the new dramatic character study, “Late Fame.”