Warren Buffett has spent decades explaining why intelligence alone doesn’t build wealth. He has watched brilliant doctors, engineers, and executives stay broke their entire lives while people of average intelligence became millionaires next door.
Buffett credits temperament for most of the difference. Here are five money habits he has warned about over the years, the ones that keep smart people broke for decades at a time.
1. They Try to Get Rich With Borrowed Money
“When you combine ignorance and leverage, you get some pretty interesting results.” – Warren Buffett.
Smart people often believe they can beat the market by borrowing money to multiply their returns. The math looks great on paper. If an investment returns 10 percent and the loan costs 6 percent, the spread feels like free money.
Buffett has spent his whole career warning people about this trap. When highly intelligent investors go broke, he has observed, borrowed money is almost always the cause.
High leverage robs you of the ability to survive a bad year. Markets can stay irrational far longer than an investor on margin can stay solvent, and one margin call at the wrong moment can erase years of good investment returns in a single afternoon.
His position is blunt. A genuinely smart investor doesn’t need debt to get rich, and anyone else has no business touching it in the first place.
2. They Skip the Best Investment Available
“By far the best investment you can make is in yourself.” – Warren Buffett.
Plenty of intelligent people spend their twenties hunting for clever external investments while their own skills sit idle. They study stock charts and crypto whitepapers, but never work on how they speak, write, communicate, sell, or develop their technical skills.
Buffett has told students for years that they are the most valuable assets they will ever own. Nobody can tax your own skillset away, and nobody can take it from you either.
He points to communication as the single highest-return skill a young person can build. Buffett took a Dale Carnegie public speaking course as a young man because he was terrified of speaking in front of groups, and he keeps that certificate in his office today instead of his college diplomas.
Smart people who skip this step put a lid on their own income. The amount you can invest always depends on the amount you can earn, and no portfolio strategy fixes a stalled career.
3. They Wait Too Long to Start Compounding
“Life is like a snowball. The important thing is finding wet snow and a really long hill.” – Warren Buffett.
Highly educated people love to wait. They want the perfect entry point or one more book under their belt before they put real money to work, and the years slide by while they study.
Buffett considers the delay one of the most expensive mistakes a person can make. Compounding needs two ingredients: a decent rate of return and an enormous stretch of time, and only one of those cannot be bought back later.
Starting at 40 instead of 22 cuts the hill short. An average investor with an 18-year head start will usually finish far ahead of a brilliant one who waited, since compound growth does most of its work in the final decades.
Buffett bought his first stock at age 11 and has joked that he started late. Most of his net worth came after his 50th birthday, exactly how a big snowball is supposed to behave as it gets farther down the hill.
4. They Overcomplicate Simple Decisions
“There seems to be some perverse human characteristic that likes to make easy things difficult.” – Warren Buffett.
Smart people assume building wealth must require sophistication. So they wander into high-fee hedge funds, exotic derivatives, and day trading systems with no edge, and a plain index fund starts to feel beneath their intelligence level.
That feeling costs a fortune. Buffett has argued for decades that most investors, professionals included, would do better in a low-cost S&P 500 index fund than in actively managed alternatives.
He backed the claim with real money. In 2008, he bet Protege Partners $1 million for charity that an S&P 500 index fund would beat a basket of hedge funds over 10 years, and the index fund won by a wide margin.
Fees explain most of the gap. Every added layer of complexity carries costs that compound against you, and Buffett has warned that Wall Street money managers drain investor returns a little more every year they hang around.
5. They Let the Crowd Make Their Decisions
“We simply attempt to be fearful when others are greedy and to be greedy only when others are fearful.” – Warren Buffett.
A high IQ offers no protection against fear and greed. Some of the worst panic sellers in every crash are educated professionals who understand the math and still lose the argument to their own nerves.
The same people buy at the top of bubbles. When everyone around them is getting rich on a hot asset, the fear of missing out drowns out everything they know about valuation and risk.
Buffett built his fortune by leaning the other way. He put billions to work during the 2008 financial crisis while others were liquidating, and he sat out the dot-com mania while critics called him a relic for missing it.
Temperament beats intellect in markets. An investor who can’t hold a long-term plan while the crowd screams in the opposite direction will lose to one who can, no matter how many degrees hang on the wall.
Conclusion
All five habits share one root. The discipline to apply simple principles for decades matters far more than raw knowledge, and discipline is the part smart people keep skipping.
Buffett’s prescription asks nothing of your IQ. Stay out of debt, build your own skills first, start compounding early, keep the strategy simple and cheap, and ignore the crowd’s mood.
None of it is intellectually impressive, and that is the point. Boring behavior repeated for thirty years beats brilliant analysis applied in bursts, and the people who finally accept that stop being smart and broke at the same time.