In this upbeat and personal book, Matt Haig explores how the world gets into our heads, and how we can unplug ourselves in this age of anxiety. By looking at sleep, news, social media, addiction, work and play, this book invites us to feel calmer, happier and to question the habits of the digital age. It might even change the way you think about how you spend your precious time on earth. From the bestselling author of "Reasons to Stay Alive".