THE NEW YORK TIMES BESTSELLER 'This captivating, powerful book shows us scientifically and practically how to define, create and most importantly live the good life ' Jay Shetty The bestselling book based on the world's longest study on happiness reveals that good relationships are the key to a fulfilling, healthy life. What if the secret to lasting happiness has been hiding in plain sight? Based on findings from the 80-year-long Harvard Study of Adult Development, this landmark book reveals the simple yet surprising truth- the stronger our relationships, the more likely we are to live happy, satisfying and overall healthier lives. Revealing the ground-breaking research behind the world's longest-running study on happiness, programme directors Dr Robert Waldinger and Dr Marc Schulz bring together scientific precision, traditional wisdom, incredible real-life stories and actionable insights to show us how and why prioritising meaningful connection - not financial success or achievement - is the key to a good life. 'In a crowded field of life advice and even life advice based on scientific research, Schulz and Waldinger stand apart' Angela Duckworth, author of Grit 'An outstanding book. It combines the longest and richest study of human lives anywhere with two remarkable authors of extraordinary breadth' Richard Layard, author of Can We Be Happier?.