Smith, 47, has been the part of the entertainment industry for the past few decades, said the Hollywood Reporter.
"I live in complete terror. (Laughter.) Everything for me about this business and about what I've been trying to build and what I've been trying to do with my life keeps me in terror.
"I am deeply motivated by fear. With a movie, it's like you never know; you can love it, you can have done what you think is the best work you've ever done, and you put it out on that Friday, and everybody hates it - and you've taken a year. And they don't just dislike it, you know? They want to be really creative with how they let you know they hate it.