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...