The Good Life

By Robert Waldinger & Marc Schulz

8 min read

Why does it matter? Because the things most people are optimizing for — money, status, achievement — don't appear anywhere in 84 years of data on what makes a life good.

Most of us are quietly running the same calculation. Work hard. Build something. Earn enough. Stay healthy. The bet beneath all of it is that the right inputs — drive, achievement, financial security — eventually produce a good life. Reasonable bet. Almost entirely the wrong one.

Since 1938, researchers have followed 724 real people from adolescence to death, recording their lives every few years — their earnings, their marriages, their fears, their regrets. The answer to what made them healthy, happy, and long-lived surprised the researchers. It will probably surprise you too. But once you meet the people who proved it — and the ones who didn't — it's very hard to forget.

The Best Predictor of Your Health at 80 Isn't Your Cholesterol — It's How You Rated Your Relationships at 50

Grand Rapids, October 2004. A Harvard researcher named Charlotte sits in the corner of a kitchen, notebook open, while Henry and Rosa Keane, married fifty years and now in their seventies, work through a questionnaire across a pot of tea and half-eaten Oreos. The last question: what is your greatest fear?

Rosa answers first. She worries about illness, about another stroke. Henry pours more tea, takes a cookie, and goes quiet for a long time.

"It's not something I like to think about," he says finally, voice wavering. "That I won't die first is my fear. That I'll be left here without you."

Rosa died in 2009. Henry followed six weeks later.

The Harvard Study of Adult Development has been running since 1938 — 724 original participants, now expanded to more than 1,300 of their descendants. Henry was recruited at 14, living in a Boston tenement with no running water, and he gave researchers access to his life for the next seventy-one years.

What they found, looking back across those lives: the people most satisfied in their relationships at age 50 were the healthiest, mentally and physically, at age 80. Not the ones with the best midlife cholesterol numbers. Relationship satisfaction. The mechanism showed up in the data: on days when people in happy relationships experienced physical pain, their mood stayed stable. People in unhappy relationships reported that physical pain amplified into emotional suffering. The body and the bond are not separate systems.

The finding wasn't unique to Boston. Across multiple longitudinal studies involving tens of thousands of people, in Chicago, New Zealand, Baltimore, across Britain, the factor that predicts flourishing most consistently is the quality of close relationships. Not the quantity. Not marital status. The warmth and satisfaction of the connections themselves.

Henry knew this. He just waited seventy-one years for someone to come and ask.

Loneliness Kills at the Same Rate as Smoking. We Just Don't Talk About It That Way.

Social isolation kills you. Not metaphorically — as a physical process, at a scale we reserve for diseases we treat seriously.

In 2010, Julianne Holt-Lunstad pulled together 148 separate studies from Canada, Germany, Japan, Israel, and a dozen other countries, covering more than 300,000 people tracked over time. The question was simple: does social connection affect your odds of dying in any given year? The answer was stark. People with strong social ties were 50 percent more likely to survive than those without them. The mortality rate of the most isolated ran 2.3 to 2.8 times higher than the most connected. Holt-Lunstad noted the association is comparable to smoking's effect on cancer risk. In the United States, smoking is the leading cause of preventable death.

We don't run public health campaigns about loneliness. We don't put warning labels on it. We treat it as an emotional problem, a personality quirk, something a shy person needs to work on. What 300,000 data points across a dozen countries say is that it's a survival problem, operating through the same biological machinery as chronic stress and physical deterioration.

John Marsden and Leo DeMarco graduated from Harvard in the same era, came from similar families, attended church weekly, had one drink a day. By 1975, John looked like the obvious winner: a successful lawyer earning three times Leo's teacher's salary. By the time they reached their eighties, Leo described his marriage warmly; John's came back cold and withdrawn. Leo stayed physically active deep into old age. John was seriously ill for years.

Money doesn't do this. Nobel laureate Daniel Kahneman and economist Angus Deaton analyzed 450,000 daily responses from a Gallup survey of Americans and found that above a household income of roughly $75,000 — enough to cover basic needs and a feeling of control — earning more showed no clear relationship to day-to-day emotional wellbeing. The benefits of money hit a ceiling quickly. The data finds no equivalent ceiling for relationships.

This Is What a Lifetime of Small Withdrawals Looks Like

What no ceiling looks like in one life: in 1986, a Harvard researcher named George Vaillant drove through Montana to catch up with study participants who hadn't returned recent questionnaires. Sterling Ainsley, a retired materials scientist, met him at a hotel in Butte and drove him to a diner. He preferred not to do the interview at home. When Vaillant buckled into the passenger seat, the seatbelt left a stripe of dust across his chest. He noted it in his records: he'd been left to wonder when someone had last sat there.

Sterling was 64, living in a $35-a-month trailer on a small grass lot. He'd graduated from Harvard in 1944, served in the Navy, worked across the American West for forty years. He described himself as a hopeful guy. His wife lived ninety miles away; they hadn't shared a room in fifteen years and spoke only every few months. He had three grown children he beamed about when asked: an oldest daughter with a framing shop, a son who was a carpenter, a youngest daughter playing cello for an orchestra in Naples. They were the most important thing in his life, he said.

The year before, his youngest daughter had invited him to visit Italy. Sterling had been studying Italian specifically for that trip. He decided not to go. "I don't want to be a burden."

His son lived a few hours away. "I don't go down there," Sterling said. "I telephone him." The grandchildren: "I've not gotten too involved with them." When asked about his oldest friend, he said so many had died. "I hate to get attached. It hurts too much."

Then Vaillant asked about his sister Rosalie. Sterling seemed startled by the name. Rosalie had literally delivered him — she was twelve when their mother went into unexpected labor and talked her through the entire process, including cutting the cord. She then fed Sterling from a bottle for months, walked the floor with him at night. "I treated him like my own child," she told the Study. Sterling sat with the question for a long time before saying it must have been twenty years since they'd spoken. A frightened expression crossed his face. "Would she still be living?"

His only intimate was an 87-year-old neighbor. Every evening he walked to her trailer, watched television with her until she fell asleep, then helped her into bed, washed her dishes, and closed the shades. "I don't know what I'll do if she dies."

Here is what is easy to miss: Sterling never decided to lose Rosalie. He just didn't call. He never decided to skip Italy — he'd spent real time learning the language. He decided not to go that particular year, and then the next year. He loved his children; he kept the love in a separate room from his behavior. Every step was small, plausible in isolation, and they accumulated across decades into a life where the only seatbelt gathering dust was the one beside him.

Your Partner's Hand Changes How Much Pain You Feel. That's Not a Metaphor.

When a loved one holds your hand during something frightening, what's actually happening? The obvious answer is that you feel better emotionally. The real answer is that your brain is receiving a signal it processes the same way it processes painkillers.

James Coan didn't set out to study intimate relationships. He was scanning the brains of PTSD patients when a Vietnam veteran refused to enter the machine without his wife present. The man had been through combat. The enclosed tube, the noise, the isolation: he wouldn't go in alone. His wife stood at the entrance, her hand extended into the machine. The loud scanner began. The man grew agitated. She took his hand. He settled almost immediately, breathing slowed, body still. Coan was watching the brain activity on the monitors the whole time. He filed this away.

The study Coan designed next was direct: participants lay in a brain scanner facing a 20% chance of a small electric shock. Some were alone. Some held a stranger's hand. Some held their spouse's hand. The results were unambiguous. Holding a spouse's hand reduced activity in the brain regions that process fear. It also reduced how much pain participants reported when shocks arrived. For people in highly satisfied relationships, the pain reduction was comparable to a mild anesthetic. The person beside them was altering their neurochemistry.

What the veteran's wife did — standing at the entrance of a scanner, extending her hand into a tube she couldn't enter — was not emotional support in any soft sense. It was neurological intervention, measurable in real time. Coan's finding is that this protection isn't available in imagination. It runs through physical presence and actual closeness. You can't store it up or approximate it. The circuit requires contact.

Coan's framing — holding a spouse's hand works like a mild anesthetic — is deliberately clinical because the reality is clinical: love is doing something to your nervous system that changes how much pain reaches your awareness. The soft version of this, that relationships make life feel better, is true. The complete version is that your closest bonds are part of your physiology.

The Man Who Wrote 'No One' for Close Friends Changed Everything at 68

Andrew Dearing spent his working life fixing clocks: taking apart grandfather clocks and cuckoo clocks, tracing the mechanism that had stopped, making the thing run again. Customers came in with family stories attached to their broken heirlooms. He was good at it. It was the only part of his life he reliably described as happy.

Everything else was dark. His wife refused all social contact. No visitors, no going out. He attempted suicide at 45. In his 60s, he was still writing suicidal thoughts in the margins of research questionnaires. When researchers asked him to name his closest friends, he wrote two words: "No one." When asked what he did for fun: "I don't do anything. I stay home all the time except to go to work."

At 67, his eyesight failed and he could no longer do precision work. He retired. He saw a therapist for the first time and told her how alone he felt. She asked whether he'd ever thought of leaving his wife. He hadn't. A year later, at 68, he separated from her and moved into an apartment alone. He felt lonelier than ever.

On a whim, he joined the health club nearby. He started going every day. Three months later, he knew everyone there. Some shared his love of old films, and they started hosting screenings together. A few years after that, asked how often he left home to see others, Andrew answered: "Daily." Asked to rate how ideal his life was on a scale from one to seven, he circled seven.

What changed wasn't Andrew's personality or his capacity for openness. He changed a routine. He showed up to the same place at the same time and said hello to someone who kept showing up too. The research is specific about why this works: repeated casual contact is the mechanism by which close friendships form. Not willingness as an abstract quality — a place you keep going back to.

That is the shift the book keeps pressing toward: relationships need the same kind of deliberate, structural maintenance that physical fitness does. You cannot want your way to either one — you need a Tuesday run, or a health club at the same time every morning.

Andrew Dearing was the most isolated participant in a study full of isolated people. He changed his life at 68 by going somewhere regularly and saying hello.

The Advantage the Participants Never Had

The researchers spent decades watching lives unfold without being able to share what they were learning. Henry, Sterling, Andrew — by the time the data showed what actually mattered, most of them were well past 50. You haven't. You're reading this now, which means you have something none of them were given: the findings while they can still change what you do next week.

Think of one person who doesn't know how much they mean to you. Imagine you learned tonight that you'd never see them again. What would you say?

You don't have to imagine that second part. Andrew Dearing was suicidal at 45 and writing "No one" for close friends at 64. He joined a health club on a whim at 68. Eight years later, when researchers asked how often he left home to see others, he answered: daily.