The unreliable narrator is an odd concept. The way I see it, we're all unreliable narrators of our lives who usually have absolute trust in our self-told stories. Any truth is, after all, just a matter of perspective.

All of the narration in 'Smile' is first-person. Most of the books that I grew up reading had first-person narrators for some reason. My diaries were written in this voice, and since this story is autobiographical, it just felt like a natural extension.

I write almost always in the third person, and I don't think the narrator is male or female anyway. They're both, and young and old, and wise and silly, and sceptical and credulous, and innocent and experienced, all at once. Narrators are not even human - they're sprites.

First-person narrators is the way I know how to write a book with the greatest power and chance of artistic success.