In The Happiness Hypothesis, social psychologist Jonathan Haidt examines ten Great Ideas which have been championed across centuries and civilisations and asks: how can we apply these ideas to our twenty-first century lives? By holding ancient wisdom to the test of modern psychology, Haidt extracts lessons on how we can train our brains to be more optimistic, build better relationships and achieve a sense of balance. He also explores how we can overcome the obstacles to well-being that we place in our own way.In this uplifting and empowering book, Haidt draws on sources as diverse as Buddha, Benjamin Franklin and Shakespeare to show how we can find happiness and meaning in life.