WHEN YOU'RE CHOOSING YOUR PATH

16. Make Long-Term Decisions

"Compound interest is the eighth wonder of the world. He who understands it, earns it. He who doesn't, pays it." —Albert Einstein

Dear Kids,

A self-corrective system keeps you from breaking. But the system still has to be aimed somewhere — and the choices that aim it are the long-term ones. The bets you place early and let compound for decades.

This one came out of a conversation. I had the pleasure of catching up recently with an old friend I'd originally met at an economics camp in seventh grade — one of those people whose life has run on a parallel track to mine for almost twenty years. Management consulting. Startup investing. MBA programs. And now, at the same junction I find myself at, trying to figure out what the next decade actually should look like.

He'd just taken a role at an AI company in London. Three weeks in, he made the call to say fuck it and quit. I was immediately curious. The role wasn't bad. The company was good. He didn't have anything lined up. But listening to him explain it, the reasoning made sense. He didn't want to be in London long-term. He wanted to be in Asia. And he'd realized, somewhere in those three weeks, that another year spent in the wrong geography wasn't a year that compounded — it was a year that quietly subtracted from the long-term life he was trying to build.

We sat with that for a while. And it made me realize something about where we both were. We've reached the age where the word long-term has started to mean something different than it used to. The idea of finding a place to actually call home, of settling down, of starting a family — these aren't theoretical anymore. They're proximate. They're things to plan for now, with the next year, not a decade-from-now hypothetical.

The earlier you make a real long-term decision, the more time it has to compound. That sounds obvious. It is obvious. But almost everyone I know — myself included — has spent years optimizing for one-year decisions while the long-term decisions sat unmade in the background, slowly costing them options they didn't realize they were spending.

Compound interest, but for everything

The power of compound interest is most famous in finance. Einstein called it the eighth wonder of the world. A dollar saved at 22 isn't a dollar at 65 — it's something closer to twenty dollars, depending on what you did with it. The math of compounding is the closest thing the universe has to magic, and almost no one in their twenties actually internalizes it.

But the deeper truth, kiddos, is that compound interest isn't just a financial principle. It's a life principle. It works on everything that can accumulate.

The people you choose to surround yourself with compound. Spend a decade with builders, and you start, almost without noticing, to think like a builder. Spend a decade with people who complain, and the world starts to look like a place worth complaining about. The same is true of cities — the place you live shapes you over years in ways you only see in retrospect. The same is true of skills. The hour a day you spend writing, or coding, or training, doesn't add up linearly. It compounds. The fortieth year of a craft isn't worth the same as the first year. It's worth a thousand of them.

The earlier you make these decisions — about the people, the place, the skill, the partner — the longer the compounding has to work.

Will and Ariel Durant's The Lessons of History is the book that broke my one-decade brain and forced it to think in something closer to centuries. I read it on a long flight back to Beijing — Riyadh layover, the kind of trip where you have time to read something dense — and the thing that has stayed with me is not any single fact but the pacing. The Durants spent fifty years writing the history of civilization, and the book is their distilled summary at the end. What you notice, on the long horizon, is how slow real change is. Empires take generations to grow. Ideas take generations to spread. Reputations, the kind that walk into rooms ahead of someone, take generations to build. And the people who actually move history forward almost always operate on a timescale longer than their own lives. The book gave me permission to be patient in a way I wasn't before. The current panic — am I behind, am I falling behind, did I miss it — looks absurd against a backdrop where the right move played out over thirty years instead of three. Long-term decisions don't get harder on a long horizon. They get more obvious.

Naval's rule

Naval Ravikant says it cleanest: play long-term games with long-term people. If you can't see yourself working with someone for life, don't work with them for a day. The same is true of places. The same is true of careers.

I think about this rule constantly. It's the thing that quietly explains why some people accumulate a particular kind of luck over time — a gravity, really — and others, who seem just as smart on paper, somehow don't.

The people who play long-term games stop having to play games. They build reputations that walk into rooms ahead of them. They earn deals that come to them without any pitch. They acquire the strange compounding asset of being someone people want to bet on. You can't build that in five years. You build it across decades, one repeated interaction at a time, by being the kind of person who shows up when they said they would, who tells the truth when it would be easier not to, and who never quietly screws someone over for a short-term win.

The same is true on the other side. If you screw someone over once, you saved yourself a few months of friction. You also closed a door that, twenty years later, you'll wish were still open. Long-term reputation is a currency you spend by accident, and it almost never grows back.

The asymmetric outcomes live here

The asymmetric outcomes in life — the ones that genuinely change your trajectory — almost always come from long-term decisions made early, then left alone to compound.

The marriage you chose at 28 instead of 32 because you happened to meet the right person. The friend you stayed in touch with for fifteen years before they introduced you to your next career. The unsexy skill you started building at 22 that became the leverage point at 35. The city you moved to in your twenties because someone you trusted said it was the place to be, and you didn't know at the time it would also be where you'd meet your spouse, your best friends, your business partners.

None of those decisions felt like a "long-term decision" in the moment. They felt small. They felt like the next thing. They became the long-term decision in retrospect.

Which is the trap, kiddos — the long-term decisions don't look like long-term decisions when you're making them. They look like a single Tuesday. That's why thinking explicitly about the long-term lens, and asking the long-term question deliberately, matters so much. The lens won't get applied for you by anyone else.

David Deutsch's The Beginning of Infinity pushes the timescale one notch further than even the Durants do. I read it slowly — it's not a fast book — over a few months in Beijing, mostly at night. His argument, compressed, is that human knowledge is in principle unbounded; that good explanations beget more problems and more explanations, and the loop never closes; that the future of the species, if we don't destroy ourselves, is something closer to infinite than finite. I'm wary of cosmic optimism for its own sake. What's useful about Deutsch isn't the techno-utopianism. It's the way the long horizon changes the calculus on short-term suffering. If the species — and the people around you — are likely to be around in some form for thousands of years, then the decision you're agonizing over for next quarter is, almost by definition, irrelevant. The trade-off between short-term pain and long-term gain stops being a trade-off. The long-term answer just wins. That sounds glib, but it isn't. It's how patient capital, patient careers, and patient relationships actually get built — by people who have, for whatever reason, learned to live a bit further into the future than the rest of us.

The question to ask

When you face a decision, kids, don't just ask what it gets you next year. Ask what it gets you in fifty.

Where do you want to be living? Who do you want to be near? What kind of work do you want to look back on having done? Whose lives do you want to have quietly improved by your existing in them? Run the question on the next move with that horizon in mind, and watch how often the answer changes.

The short-horizon answer rewards optimization. Take the higher salary. Take the better title. Take the safer job. The long-horizon answer often rewards something stranger and braver. Move to the place you actually want to be in twenty years. Spend time with the person you'd want to grow old with, not the one who looks best on a Tuesday. Build the skill that's slow but compounds.

This isn't to say short-term decisions don't matter. They do. The small choices compound, as I wrote you in the last letter. But the small choices have to be aimed at something — and the something is what long-term decisions set.

What I'm still figuring out

I don't have this fully figured out, kids. I'm 28 writing this letter. I've made some good long-term bets and a few I'm not sure about yet. The hardest thing about long-term decisions is that you don't get to know whether they were right for a very long time.

What I've come to trust, though, is the question itself. And as always — it goes back to the why. If I can articulate cleanly why I'm making a choice over a fifty-year horizon, and the reasoning still holds up the next morning, I tend to trust the choice even when the short-term outcome is uncomfortable. If I can't articulate the long-term why — if the only reason for the choice lives in the next twelve months — that's usually a signal I'm optimizing for something that won't matter in five years.

Use the rule, kids. Play long-term games with long-term people. Choose places, partners, skills, and careers that compound. Make the decision once, intentionally, and then let time do its strange, patient work.

Love,

Dad