"I've never been one of those actors who has touted myself as a fascinating human being. I had to decide early on whether I was to be an actor or a personality"

In this quote, Robert De Niro is acknowledging that some actors use their individual lives as a tool for promotion and to enhance their professions. Nevertheless, he explains that he chose to focus entirely on his craft as an actor and not utilize his individual life as a method to become more popular or fascinating to the public. Basically, he is specifying that he wishes to be understood and respected for his acting abilities rather than his personality. This quote also shows a sense of humility and a commitment to the craft of acting, instead of seeking attention and fame.