Arthur Brooks and the Harvard Study of Adult Development point to a handful of habits that tend to produce longer, healthier, and happier lives: sensible eating, measured exercise, restraint with substances, ongoing curiosity and learning, strong coping skills, and deep personal connections. This piece walks through those themes in a straightforward way, quoting Brooks where his voice sharpened the point, and staying practical about what people can actually prioritize as they age.
The Harvard study behind these findings tracked people for decades, and Brooks highlights patterns that show up again and again. The first cluster is basic but crucial: what you eat and how you move shapes both your body and your mood over the long term. Research consistently finds that a nutritious, balanced diet supports physical health and mental well-being as people get older.
Exercise matters, but Brooks warns against overdoing it, because extremes can backfire on the body. He cautioned that people who push too hard risk mechanical breakdown and diminished returns. In his words, those who are “exercise maniacs” could run the risk of doing “mechanical ill” to the body.
Substance habits separate many who age well from those who don’t, and moderation is a recurring theme. Brooks observed, “They’re very moderate on substances, none of them were addicts,” Brooks said. “Or if they had trouble with it, they quit.” He also noted bluntly, “Lifelong smokers have a seven in 10 chance of dying of a smoking-related illness – and that’s an unhappy way to go.”
Brooks also flagged how addictive patterns often mask unhappiness and lead to substitution problems rather than solutions. “And actually, you’re probably not happy and there’s a lot of compensation that’s going on,” he continued. “That’s how a lot of former alcoholics re-sample: They become addicted.”
Curiosity and intellectual engagement turn out to be steady predictors of a good later life, with lifelong learners faring better across the board. “That’s usually a lot of reading, but it’s just curiosity is how that comes about, which is really, really important,” he said on the podcast. Brooks described this impulse as “your technique for dealing with life’s problems.”
Developing emotional skills and coping techniques shows up in every story of successful aging Brooks discusses. “You’ve got to get good at it,” he said. “You need skill at dealing with life’s problems. If you don’t get good at it, you’re going to be bad when things actually crop up.” Practical approaches like therapy, meditation, prayer, and journaling are common tools people use to get that skill.
How you handle hardship and stress often determines whether you remain stable and content over decades, and Brooks stresses the craftsmanship of coping. “All the happy and well people have their way [of dealing] with it, and they’re highly skilled in doing it.” That skill is rarely accidental; it’s built through practice and honest work on oneself.
Finally, relationships are non-negotiable in Brooks’s playbook for a good life. “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. “That’s it. There’s no substitute for love. Happiness is love – full stop.”
