I watch mainly fiction. The films I like watching are films where you see people change, like with Boyhood. You see a moment in someone's life where it's a breakthrough. For me, the breakthrough in Boyhood is that amazing moment right at the end when he finds somebody he can feel relaxed with, and who will maybe be a friend for the rest of his life. I like that it doesn't end in a love affair or marriage. It just ends in, "Wow, I found people I can relate to for the first people in my life. These people accept me, I like them."

The biggest misconception about me is perhaps that I film all the time and film everything randomly. The truth is I film very little and always when something excites me and seems to mean something for the film.

Those are the films I want to make. I don't want to make a film about, "Oh, those poor prostitutes!" Or "Oh, isn't it terrible in Chicago!" I want to make a film where people think, "Brenda's like me!"

I remember very clearly when I found my first soulmate, it was actually in my late 20s, that wonderful feeling of being accepted by people.

People want black and white answers, but it's not one thing or another. I think the only way we're going to make good things is to inspire people and make them feel as though what they're watching is real.

I know that sounds contradictory - you're going on a journey, but once you know who your characters are, you become more disciplined and you film less and less.

The magic of documentary is that I keep being surprised and amazed by the things I film.