In How to be a Human, Ruby Wax tries to come up with some answers to that niggling question about who we are. With the input of a monk (an expert on our inner lives) and a neuroscientist (an expert on the brain), Ruby explores how to find happiness in the modern world - despite the constant bombardment of bad news, the need to choose between 5,000 different types of toothpaste, and the loneliness of having hundreds of friends who we've never met and don't know us.