What's the trick to writing a great female character? Make her human.

I have a boundary problem... I need to know when to give and when to back up. I'll help someone across the street and then into their homes and they'll start telling me all their problems... and it turns out they're insane and want to kill me. I've got to know when to stop!

I know I repeat myself in all my movies, but I just let it go, let it happen. Clearly, I'm not finished with that issue. But they seem to me like completely different movies. They're definitely coming from me.

I thought of the scene while writing scenes with Rebecca [Hall] and wrote it like an opening montage of showing where someone works. If you see a film about a car mechanic, you'd show the place they work and what they do. So, that's what I set out to do with Rebecca's character. I thought it probably wouldn't even make it into film but I ended up liking it.

I wrote lots of scripts that never got made and they were terrible. I thought they were good at the time. You can't write two scripts and expect your career to take off. Keep writing. Be you. Be original. A lot of people go for a genre, which is fine if you can do that really well, but we all have such layered histories. We all come from a unique background. Write about your past, write about you. Or make stuff up, but make it about something that really matters.

My idea of no makeup on actors is really no makeup. I mean, they can be wearing makeup. I don't care what they're wearing as long as it looks like they're not wearing makeup. But an actress will suddenly appear with some lipstick on. And that's makeup. Keener's character wears makeup. Her character would wear makeup. I try to stay true to whoever that person is. I hate that kind of thing where you're waking up in the morning with makeup on in a movie. I just think it pulls you out of the movie.

My grandma has said many of the things her character says. But she was much nicer! I made her meaner for dramatic purposes.