‘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

What is the key to a good life?

It is a question that preoccupies us all and one that the longest and most successful study of happiness ever conducted strives to answer. In this groundbreaking book, directors of the Harvard Study of Adult Development, Robert Waldinger and Marc Schulz, bring together over 80 years of research to reveal th...

A New York Times Bestseller

What makes for a happy life, a fulfilling life? A good life? In their “captivating” (The Wall Street Journal) book, the directors of the Harvard Study of Adult Development, the longest scientific study of happiness ever conducted, show that the answer to these questions may be closer than you realize.

What makes a life fulfilling and meaningful? The simple but surprising answer is: relationships. The stronger our relationships, the more l...