Paula Hawkins

The journalism, I was a financial journalist - it's very good training as a writer. You have to write for deadlines; you have a certain economy of phrasing. As a training ground as a writer, it's fantastic. I also think it teaches you to be observant, to listen to people, and gives you an ear of dialogue from doing interviews.

I don't have a partner, so I take care of the mortgage by myself, and I was thinking, 'Oh God, I'm going to have to sell the house or find a new career.' I was not in a good place, but it was a real spur to get 'The Girl on the Train' right. I had to nail it and do it really well. It really concentrates the mind, that kind of thing.

I do read a lot, and I think in recent years the ratio between the amount of non-fiction and fiction has tipped quite considerably. I did read fiction as a teenager as well, mostly because I was forced to read fiction, of course, to go through high school.

Outcome is simply the final score: Who won the game; what numbers came up in a roll of the dice; how high did a stock go. Outcome is the result, regardless of the method used to achieve it. It is not controllable.