Everything that you could think about in life, or experience, or be interested in, theoretically should be expressed or dealt with in cinema. But the way typical narratives are set up, there's no room for philosophy, because it's just digressive material. It's not advancing the plot, so there's no place for it. It's the kind of stuff you would cut out, and that you shouldn't have put in there to begin with.
I think in show business, it's really kind of easy to perpetuate that feeling of, like, Oh, I don't measure up. Or always having to prove yourself.