You’re Investing for Someone You Don’t Know

Investing for the long term means investing for a person who doesn’t exist today.

That person is you—but ten years from now. With different priorities, different desires, a different body, a different worldview. Maybe with children who aren’t here yet. Maybe without parents who are still here today. Maybe with a different job, a different city, a version of yourself you can’t even imagine right now.

Look back ten years. Were you the same person?
I’m not talking about appearance (that part is obvious—and usually not very comforting). I’m talking about mindset, beliefs, ambitions, friendships. From 20 to 30, from 30 to 40, from 40 to 50. Between children being born, parents aging, careers shifting, relationships ending and others beginning.

Do you feel like the same person? I don’t.

And yet, when it comes to investing, we treat the “long term” as if it were a technical parameter. A number. Ten years. Twenty. Thirty. As if selecting a time horizon in a questionnaire were enough.

It isn’t.

The long term is not a financial concept. It’s existential.
It’s the amount of time over which you can be certain your life will no longer be the same. And neither will you.

Everyone Talks About It. No One Practices It

In finance, the phrase “long term” is overused—and often misused.
Every advisor says it. Every portfolio includes it. Every brochure promises it.

But the numbers tell a different story.

According to research by Intesa Sanpaolo – Centro Einaudi, only 6.7% of Italian savers cite long-term returns as their primary goal. Everyone else wants “safety.” Nine out of ten declare total risk aversion.

Which would be understandable—if safety without growth weren’t itself a risk: the slow, silent loss of purchasing power year after year, like a leak inside a wall that you only notice when it’s too late.

And here lies the core of the problem: people don’t fail to invest for the long term because they’ve never heard of it. They’ve heard it far too often.

The problem is that long-term investing is boring, counterintuitive, emotionally exhausting—and incompatible with almost everything the human brain wants to do.

Human beings will always want things that are easy, fast, and safe. Little desire to understand, little desire to wait, little desire to take risks. Marketing knows this very well—and sells ease, speed, and safety, even when it’s false, unrealistic, or misleading.

But the results that matter are never easy, fast, and safe.
Not in investing. Not in life.

Why Time Is the Real Competitive Advantage

The Buffett Paradox (and the Youth Paradox)

Warren Buffett accumulated over 95% of his wealth after the age of 55. Not because he was unskilled before (he was already a millionaire), but because that’s how compound interest works: the early decades build the foundation, the later ones create the explosion.

Morgan Housel, in The Psychology of Money, calls this the mismatch between cash flow and time horizon. And it’s brutal: a 23-year-old has 40 years before retirement, but earns little and often carries debt. When income finally grows and cash flow becomes meaningful, the power of compounding has already diminished by 90%.

Those who have time don’t have money.
Those who have money no longer have time.

This isn’t a reason to give up. It’s a reason to start early—with whatever you have, even if it’s little. Because every year of compounding you lose is gone forever.

The Historical Evidence: When Time Eliminates Risk

Here’s what data from the MSCI World Index—one of the most representative global stock indices—tells us:

Investment Horizon	Probability of Positive Returns
1 year	~73%
5 years	~86%
10 years	~94%
15 years	~100%

Read it the other way around:
someone investing in global equities for a day, a month, or even a year is essentially gambling with decent odds.
Someone investing for 15 years or more has historically achieved positive returns in every measured period.

Time doesn’t eliminate volatility—markets will always fluctuate.
It eliminates the consequences of volatility. Two very different things.

Jason Zweig summed it up perfectly:
“In the short run, hares have more fun. But in the long run, it’s the turtles that win the race.”

Time Arbitrage: The Advantage No One Wants

Most institutional investors think in quarters. Fund managers are evaluated yearly. Financial media runs on daily news. The entire system is built for the short term.

And that’s where a huge opportunity lies for individual investors—one that requires no special skill, no privileged information, and no exceptional talent.

If you can think in decades while others think in quarters, you already have an unfair advantage. You don’t need to be smarter. You just need to be more patient.

This is time arbitrage.
And it’s the only “edge” that is replicable, democratic, and accessible to anyone with the discipline not to touch their portfolio when their brain is screaming to do so.

The “Boring Middle”: The Hardest Part

The hardest part of long-term investing isn’t surviving market crashes. Crashes are dramatic—but short-lived. The brain is wired to handle emergencies.

The real challenge is enduring the decades where nothing exciting seems to happen.

The “boring middle”—that long stretch between the initial enthusiasm and the final payoff—is where most investors quit. Not because of panic. But because of boredom. Impatience. The feeling that “it’s not working,” when in reality it’s working exactly as it should.

It’s like planting a tree and complaining every day because you don’t see fruit. The roots are expanding underground. But all you see is dirt. And dirt, by definition, is boring.

You don’t need to predict the future.
You need to survive it.

How to Invest for the Long Term (For Real)

Define Your “Long Term” in Life Terms, Not Years

“Long term” doesn’t mean 10 years. It means: when will I need this money, and for what?
Retirement, your children’s education, financial independence.

The number of years is a consequence of your life goals—not an input from a questionnaire.

For someone terminally ill, the long term might be three months. For a 30-year-old planning to retire at 60, it’s thirty years. Time horizon is not an objective measure—it’s personal, tied to your situation, your plans, your life.

Accept the Boring Middle Before You Start

If you’re not willing to be bored for twenty years, don’t invest in equities.
That’s not an insult—it’s a diagnosis.

Most of the damage investors inflict on themselves comes from the inability to stay still. As Jason Zweig puts it, 99% of the time, the most important thing to do with your portfolio is absolutely nothing.

Automate to Remove Yourself from the Equation

A savings plan (PAC) isn’t just an investment strategy—it’s a behavioral strategy.

Remove the decision from the process, and you remove emotion from the decision.
Every month, automatically. No watching markets, no reading headlines, no asking your brother-in-law who “knows someone at the bank.”

Behavioral economics isn’t a window through which you judge others—it’s a mirror. And in that mirror, most of us see someone who shouldn’t be making investment decisions under stress.

Measure Success in Decades, Not Months

Stop checking your portfolio every week. Not because staying informed is wrong, but because the more you look, the more you react. And the more you react, the worse your results.

Psychologist Paul Andreassen showed that people who receive frequent financial news updates achieve lower returns than those who don’t.

The paradox is well documented: portfolios of deceased investors tend to outperform those of living ones.
Dead investors don’t panic sell.

(I’m not suggesting death as an investment strategy. But the principle is clear.)

An Identity Question, Not a Return Question

Long-term investing, at its core, isn’t a financial strategy. It’s a statement about who you want to be.

It’s choosing to trust your future self—the one you don’t yet know—more than the noise of the present. It’s accepting that the actions you take today won’t produce visible results for years, maybe decades—and doing them anyway.

It’s what separates builders from reactors. Those who plant trees from those who buy cut flowers.

You don’t need to be smarter than others. You don’t need more information, more money, or more luck.
You just need a longer horizon.

Try to understand whether your current relationship with money is the one you’d want ten years from now. And whether the actions you’re taking today are the ones that will make your future self proud.

Then act accordingly.

FAQ

How long is the “long term” in investing?

There’s no one-size-fits-all number. The long term depends on your life goals: if you’re investing for retirement in 25 years, that’s your long term. If you’re saving to buy a house in 5 years, your horizon is different—and requires different tools.

As a practical rule, investing in equities with a reasonable probability of positive returns requires at least 10–15 years. Below that threshold, equity exposure should be carefully calibrated.

Is long-term investing worth it even with a small amount of capital?

Especially with a small amount. Compound interest works on any sum: €100 per month invested for 30 years at an average 7% return grows to about €122,000, from €36,000 contributed.

The difference—€86,000—is generated by time, not capital.
If you have little, you should start earlier—not wait until you have more.

How do you stay invested during market downturns?

With a written plan, defined before the downturn happens. When markets fall, the brain switches into survival mode and rational thinking goes out the window.

Your only defense is having already decided what to do: if your plan says to stay invested and rebalance, then you stay invested and rebalance. The decision has already been made—when you were thinking clearly.

This is also why understanding cognitive biases is essential: they shape financial decisions more than most people realize.

Does long-term investing still work if markets don’t grow like in the past?

No one can guarantee that the next 30 years will replicate the past. But betting against long-term global economic growth means betting against human ingenuity, technological innovation, and population growth—a bet that, over 200 years of market history, has consistently lost.

Historically, the risk of staying out of the market has been far greater than the risk of being in it.

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