You've been dreaming about that summer break on the sun lounger, book in one hand and drink in the other, for months. Now the dash to the airport gate, train station or hours-long drive is all that stands in your way. But what does the book you've just shoved in your suitcase say about you? "Your reading list is basically a map of your personality. "When you pick a thriller or romance or horror or science fiction you're not escaping your psychology, in a way, you're really feeling very intuitive and very old parts of your brain.