Book excerpt: 'In any human life there are going to be periods of unhappiness. Learning how to be sad is a natural first step in how to be happier' Meik Wiking, CEO of the Happiness Research Institute Helen Russell is an expert on the pursuit of happiness. In How to Be Sad she combines her powerful personal story with surprising research and warm advice to reveal the secret of finding joy: allowing sadness to enrich your life and relationships. Timely and essential, this book is about how we can better look after ourselves and each other, simply by getting smarter about sadness.