The best trade I ever made was executed from my bedroom, on a weekday morning in summer, under a green banker’s lamp.

I was still in high school. I know it was a weekday because I remember the particular quiet of a house where everyone else had gone to work, and I know it was summer because I wasn’t in school to notice. I had a desk in my room that looked more formal than a teenager needed — I did my homework at it and, increasingly, my stock research, which I took as seriously as any homework I was ever assigned — and on that desk sat one of those green glass banker’s lamps, the classic kind, the kind you’ve seen in a hundred old movies about men who know what they’re doing. I picked up the phone and called the family’s broker. I told him what I wanted: sell my fifty shares of a certain online bookstore, at the market. It had doubled. I had bought it on a pullback the previous year, done the arithmetic, and decided that a clean double was what a professional takes. He came back on the line a minute later, confirmed the fill, and said something I can still hear in his voice: “Great trade.”

I hung up and sat there under the lamp feeling like a million bucks. I want to be precise about that phrase, because I chose it on purpose. A million dollars is, give or take, what I had just given away.

Hold that feeling — the one that arrives when you take a profit and someone competent tells you that you did it right. You’ve had it. I think it may be the most expensive feeling in investing.

Masonry

I didn’t understand what I’d done for a long time, and when I finally did, it wasn’t through a spreadsheet. It was through a wall.

A brick wall is built the only way a wall can be built: one course at a time, one brick at a time, with mortar between them that sets slower than anyone laying it would like. The mason’s first skill is placing the brick. His second skill — the one that takes years — is leaving it alone. Because here is the thing about a brick you pull out of a wall to admire: you can’t put it back where it was. The mortar around the gap has cured; the course above has settled onto its neighbors; the wall has moved on without it. You can lay that brick again, somewhere else, at the top, but never in the place it occupied at the price it was laid, and the wall you have is now a wall with a gap in it that every later course has to bridge.

That is what compounding actually looks like, if you could see it. Every month you hold is a brick. The years are the mortar. And the trade I made under the green lamp — the clean double, the professional’s exit — was a brick pulled from the third course of a wall that would eventually stand a hundred courses high. Fifty shares, through three later splits I never held for, would have become six thousand shares without another dollar from me; the wall adds bricks by itself while the mason isn’t looking. At today’s price, that gap is worth something north of a million dollars. I banked five thousand. I felt wonderful about it. The broker said “great trade,” and he meant it, and by every rule either of us had been taught, he was right.

Would You?

So here is the question I’ve stopped being able to avoid, and I’ll ask it to you the way I ask it to myself: would you have held?

Not with what you know now. With what that boy knew then, under the lamp, on a summer morning, having doubled his money on a company most adults considered a fad. Every rule in the room said take it. What every CNBC guest had drilled in said take it. The competent man on the phone said great trade. A bird in the hand. Nobody sensible loses money taking a profit. I have asked a lot of people this question, and the honest answer, once the flattering one wears off, is almost always no. They’d have sold too. I certainly would have — I have the receipt.

And I’ll go one further, because it’s the part that finally changed how I build things. Suppose the man I am now could go back to that bedroom, tap that boy on the shoulder, and tell him exactly what those fifty shares would become — the splits, the six thousand, the number with the six zeros — if he simply left them alone for twenty-seven years. I know that boy. He’d have rolled his eyes at “twenty-seven years,” asked me whether I had a faster stock, and sold anyway. Knowing the future wasn’t the problem. Waiting for it was. The information was never what he lacked; what he lacked was a structure that didn’t require him to be a better person than he was.

No Sell Button

That is why the system I run now looks the way it does, and it’s the design decision that trade eventually produced. Anchored DCA™ has no sell rule — on purpose. A fixed amount goes in on a fixed date, into a small set of companies chosen on calm days for their place in the transformation, and the positions stay. Not because selling is always wrong, but because I have learned exactly who reaches for the sell button in a system that has one: the most confident version of me, on the day a position has doubled, with a competent voice in his ear saying great trade. The only exit the system allows is the one written down in advance — sell when the thesis is broken, when the business has changed, never when the price has — and it gets decided on a day when nothing is up and no one is congratulating me. The mason’s second skill, built into the wall itself, so that it doesn’t depend on the mason’s mood.

The green lamp, for what it’s worth, is still with me. Not the same one — a near replica — but it sits on the desk where I write this letter, and I look at it most mornings while the coffee goes cold. I used to find that a little cruel. I’ve come to think it’s the right lamp to write under: the same light that watched me pull the brick now watches me lay them, one a month, and not touch them.

If you’ve got a great trade in your past — the clean double, the profit someone praised, the one that felt like a million bucks — you’re not alone, and you weren’t foolish; you were faithful to rules built for a different game. The wall doesn’t need you to regret it. It needs your next brick, and then the discipline to leave it in. AI Wealth Blueprint is where I lay mine, one course at a time, under a lamp that knows better. You’re welcome to build alongside whenever the morning invites you.

— Christopher Cinek
Founder, AI Wealth Blueprint

Nothing in this publication constitutes financial, investment, tax, or legal advice. AI Wealth Blueprint is an educational newsletter published for informational purposes only under the “publisher’s exemption” of the Investment Advisers Act of 1940. No personalized investment advice is provided. All examples, illustrations, and numeric scenarios are hypothetical and for educational purposes only. Past performance does not guarantee future results.