What makes for a fulfilling and meaningful life? A good life?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 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 prove once and for all that our own wellbeing and ability to flourish is absolutely within our control.