Gillian's writing process:
-She only loosely outlines and lets the story discover itself as she writes.
-When writing Gone Girl, she didn't expect the "twist" in the middle.
-She likes to keep her novels character driven rather than plot driven. The characters create the plot for her.
-Her office is her basement. She makes notes on sticky pads and puts them on walls to remind her which parts of the story to solve.
-Whenever she's stuck, she does a writing exercise that is outside of her novel. For instance, a character's memory or writing from a different perspective. Her rule is that these exercises don't go into the final novel (to take the pressure off)--but one of them did make it into Gone Girl since she liked it so much. The infamous "cool girl" passage is from the exercise.
-Gone Girl was her most difficult project and she spent two years working on it.
-She details her characters outside of the novel as much as possible, such as what they eat for breakfast and if they remember birthdays and what's on their playlist.
-She enjoys the revision process best, identifying the weak areas and making the story better.
-She got to write the script for the Gone Girl movie.
I hope you enjoyed learning some of her writing techniques! I'm looking forward to seeing what the movie is going to be like.