The International Bestseller: A Radically New Way Of Thinking About Depression And Anxiety'a Book That Could Actually Make Us Happy' Simon Amstell'this Amazing Book Will Change Your Life' Elton John'one Of The Most Important Texts Of Recent Years' British Journal Of General Practice 'brilliant, Stimulating, Radical' Matt Haig'the More People Read This Book, The Better Off The World Will Be' Naomi Klein 'wonderful' Hillary Clinton'eye-opening' Guardian'brilliant For Anyone Wanting A Better Understanding Of Mental Health' Zoe Ball 'a Game-changer' Davina Mccall 'extraordinary' Dr Max Pembertondepression And Anxiety Are Now At Epidemic Levels. Why? Across The World, Scientists Have Uncovered Evidence For Nine Different Causes.