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.

Working with franchises can be challenging, but at the same time I really did enjoy working on 'Star Wars,' for example, and I have done a lot of 'Dungeons & Dragons' games, but I still enjoy it very much.

I was going to become a youth worker because I do voluntary work with the kids in the little village where I live. I make little films with them and stuff when I'm not working. I thought, I'll pack it in then, and go and do something I love doing, and get a regular job because I've got two kids and a mortgage.