Most of us spend our lives chasing happiness without ever stopping to ask what the science actually says about how to find it.
Fortunately, one of the world’s leading experts on the subject has been paying close attention — and the answers, while sometimes surprising, are well within reach for ordinary people.
Arthur Brooks, a behavioral scientist and happiness researcher who teaches at both the Harvard Kennedy School and Harvard Business School, recently appeared on a podcast to discuss findings from one of the most ambitious studies in the history of social science, according to Fox News.
The Harvard Study of Adult Development has tracked the lives of adults for 85 years, and what it reveals about the habits of the happiest, healthiest people among them is both illuminating and, in places, quietly humbling.
Brooks divides the six habits into two groups: three that most people already know matter, and three that tend to fly under the radar.
Habit 1: Follow a Healthy Diet — Food Is the Foundation Research shows that a nutritious, balanced diet supports both physical health and mental well-being over time. Brooks identifies this as one of the three most obvious habits — widely known, yet still worth naming as a non-negotiable cornerstone of healthy aging.
Habit 2: Exercise Frequently — But Don’t Overdo It Regular physical activity is essential, but Brooks cautions against excess. Those who are “exercise maniacs,” he warned, risk doing “mechanical ill” to the body — making balance, not obsession, the wiser approach.
Habit 3: Abstain From Smoking and Drinking — Substances and Happiness Don’t Mix The happiest and healthiest people in the study were moderate with substances — and those who struggled with addiction ultimately quit. Brooks is blunt about the stakes: lifelong smokers have a seven-in-ten chance of dying from a smoking-related illness. And beyond the physical toll, he notes, addiction is bound up with unhappiness — with heavy compensation going on beneath the surface.
Habit 4: Never Stop Learning — Curiosity Is the Key Lifelong learners tend to be healthier and happier, according to Brooks. “That’s usually a lot of reading,” he said, “but it’s just curiosity is how that comes about — which is really, really important.” The habit is less about formal education than about maintaining an active, questioning engagement with the world.
Habit 5: Master the Art of Problem-Solving — Build Your Toolkit Before You Need It Brooks describes this as developing “your technique for dealing with life’s problems.” The happiest and healthiest people are highly skilled at it, he says — and that skill has to be deliberately built. “If you don’t get good at it, you’re going to be bad when things actually crop up.” Healthy approaches he recommends include therapy, meditation, prayer, and journaling.
Habit 6: Invest in Love — Nothing Else Comes Close “People who have the best lives, who are happy and well when they’re older, have a strong marriage and/or close friendships,” Brooks said. His conclusion on this point is unambiguous: “There’s no substitute for love. Happiness is love — full stop.”
What makes this framework compelling is not that any single item on the list is shocking, but that the six habits together form a coherent picture of a life well-lived.
They suggest that happiness is less a feeling to be pursued and more a discipline to be practiced — built through the choices we make about what we eat, how we move, what we learn, how we cope, and, above all, who we choose to love.
In a culture saturated with quick fixes, the Harvard data offers something more durable: a reminder that the fundamentals still matter most.
