As you'll know yourself, there are these moments when you're writing a book when one remark or moment will pull everything together and you'll think, "That's it. I've got what I need."

Why isn't life better designed so it warns you when terrible things are about to happen?

While I was writing the book, one of my children was diagnosed with dyslexia. Dyslexia is a very tiny word for a wide-ranging neurological condition that affects different people in different ways. But I was reading an awful lot about it, to try and find ways of helping my child. I think a lot of fiction comes from this desire to confront unanswerable questions, and it's heartbreaking to see your child, a bright child, struggling so much with something that others are finding so easy. It's such an assault to the child's self-esteem and, as a mother, it's hard to watch.

People had tell me the most personal things. People I'd never met before would say thing like "Oh, that was the summer I had an affair with my neighbor." The 1976 heatwave occupies a peculiar place in people's psyches.

We always planned to move back to the Republic but it never happened, I'm not sure why. My dad is one of those immigrants who never leaves the place he came from. He talks about Ireland all the time. If any Irishman wins at any sort of sport, he sees it as a personal achievement.

Always, at the end of every book, there are things you will be unsatisfied with, and still more things that later on you will realize were not right. But mistakes are part of what a book is. That itchy, dissatisfied feeling at the end of a novel is useful. It's what keeps you writing and gets you writing the next one. It's what keeps you learning.

You need a lot of energy to get a novel finished. You need an ability to ignore everyone around you. It's why I don't read my reviews any more. I know a lot of people say that, but I really don't read them.