Few writers have managed to pin the millennial male ego under glass the way Nick Hornby has. In his comic novels High Fidelity, About a Boy, and the new Juliet, Naked, among others, Hornby picks apart our vanity and insecurity in ways that are as scary as they are entertaining. He’s also written loads of great nonfiction about his love of soccer, literature, and pop music. Like High Fidelity, probably his best-known book, Juliet,…