The Happiness Formula

Insights from Decades of Research
What does it really take to live a long, fulfilling life? According to Arthur Brooks, a professor at both Harvard Kennedy School and Harvard Business School, the answer lies in consistent daily habits. Drawing from the Harvard Study of Adult Development—an 85-year study tracking adult lives—Brooks highlights six behaviors that consistently show up in people who report higher levels of happiness and health.

The Foundations: Health and Moderation
Some of the habits are straightforward. A balanced, nutritious diet supports both physical and mental well-being over time. Regular exercise also plays a key role, though Brooks cautions against overdoing it, noting that excessive training can actually harm the body. Equally important is avoiding harmful substances—those who live the longest, healthiest lives tend to steer clear of smoking and practice moderation when it comes to alcohol.

The Overlooked Habits That Matter Most
Beyond physical health, Brooks points to habits that are often underestimated. Lifelong learning—fueled by curiosity and reading—keeps both the mind sharp and life engaging. Another critical trait is becoming a skilled problem-solver. Whether through therapy, meditation, prayer, or journaling, developing tools to navigate life’s challenges can significantly impact long-term well-being.

The Ultimate Key: Love and Connection
Perhaps the most powerful takeaway is also the simplest. Strong relationships—whether through marriage, friendship, or close personal bonds—are at the heart of happiness. According to Brooks, there is no substitute for love when it comes to living well.

A Simple Formula for a Better Life
Taken together, these six habits paint a clear picture: happiness isn’t found in one big moment, but in small, consistent choices made every day. From how we care for our bodies to how we connect with others, the path to a better life may be simpler—and more within reach—than many think.