Charlie Munger spent nearly a century sharpening one of the clearest minds in American business. He served as Warren Buffett’s partner and vice chairman at Berkshire Hathaway for decades, and his answers at shareholder meetings were often blunt enough to draw laughter from the crowd.
He never claimed he was born brilliant. What he described instead were habits, most of them fairly boring, that he repeated every day until they paid off, making him a very wise man in investing, business, and life. The five habits can also make you smarter every day.
1. Read Voraciously Every Day
Munger read constantly. Books filled most of his free hours, and he had little patience for people who claimed to want wisdom but skipped the reading.
He didn’t soften this point at all. “In my whole life, I have known no wise people (over a broad subject matter area) who didn’t read all the time. None, zero,” said Charlie Munger.
Buffett was the same way. Munger said people would be amazed at how much the two of them read, and he joked about how it looked to his family: “My children laugh at me. They think I’m a book with a couple of legs sticking out,” Charlie Munger said.
His reading went far past annual reports. He loved biographies and read widely in science and history, which gave him a deep well of examples to draw on whenever a new problem landed on his desk.
You don’t need to read like Munger to get something out of this. Pick a book on a subject you know almost nothing about. Read twenty pages tonight.
2. Practice Destroying Your Own Best Ideas
Most people collect evidence that agrees with them. Munger went looking for the facts that would prove him wrong, and he treated finding them as a win.
He considered this one of the most useful skills a person can build. “We are all learning, modifying, or destroying ideas all the time. Rapid destruction of your ideas when the time is right is one of the most valuable qualities you can acquire,” said Charlie Munger.
He also refused to take a position until he had done the work on the other side of it. “I never allow myself to have an opinion on anything that I don’t know the other side’s argument better than they do,” Charlie Munger said.
That’s a hard standard to live up to. Psychologists call the trap he was dodging confirmation bias, and it shows up everywhere from stock picks to political arguments at the dinner table.
Try it on something you feel sure about, like a stock you own or a career move you’ve already settled on. Write out the strongest case against it in your own words, then check whether your original view still stands.
3. Build a Latticework of Mental Models
Munger thought narrow expertise was risky on its own. A specialist who knows only one field tends to force every situation into that field’s way of seeing things.
He described his alternative in a 1994 talk at the USC Business School. “You’ve got to have models in your head. And you’ve got to array your experience, both vicarious and direct, on this latticework of models,” said Charlie Munger.
He pulled those models from psychology, economics, biology, physics, and math. In the same talk, he warned about what happens to people who rely on just one or two: “The nature of human psychology is such that you’ll torture reality so that it fits your models, or at least you’ll think it does,” Charlie Munger said.
He also didn’t think you needed an endless list. “80 or 90 important models will carry about 90% of the freight in making you a worldly-wise person,” said Charlie Munger.
A good first set covers ideas that appear in almost every field. Compound interest is one. Incentives are another, and Munger admitted more than once that he had underestimated their power for most of his life.
4. Solve Problems Backward Through Inversion
Munger picked up this habit from Carl Jacobi, a 19th-century German mathematician who urged people to invert hard problems. So instead of asking how to succeed, Munger asked what would guarantee failure, then steered clear of it.
His favorite way of explaining it came from an old rustic saying he repeated for years. “All I want to know is where I’m going to d*e, so I’ll never go there,” said Charlie Munger.
He also believed that avoiding stupidity paid better than chasing genius. “It is remarkable how much long-term advantage people like us have gotten by trying to be consistently not stupid, instead of trying to be very intelligent,” Charlie Munger said.
Run this on retirement planning, and the difference is obvious. Asking how to retire comfortably yields vague goals, but asking how people go broke in their sixties gets you specific answers fast, like carrying too much debt or putting everything into a single investment that wipes out your money.
5. Commit to Compounding Wisdom Daily
Munger spent his career watching money compound, and he applied the same math to knowledge. He wasn’t waiting around for a big breakthrough.
His instructions were plain. “Spend each day trying to be a little wiser than you were when you woke up. Discharge your duties faithfully and well. Step by step, you get ahead, but not necessarily in fast spurts,” said Charlie Munger.
He returned to the idea in his 2007 commencement speech at the USC Gould School of Law, where he called the people he’d seen rise in life “learning machines.” “They go to bed every night a little wiser than they were when they got up, and boy does that help, particularly when you have a long run ahead of you,” Charlie Munger told the graduates.
It works the way an investment account does. A small edge repeated over thousands of days turns into something large, and most of the gains show up later in the process.
Munger had an unusually long run. He died in November 2023, about a month short of his 100th birthday, and he was still reading and fielding questions at shareholder meetings into his late nineties.
Conclusion
None of these habits take special talent. They take repetition and a willingness to look foolish to yourself now and then when an idea you liked falls apart.
Start with whichever one feels least natural. For most people, that’s the second habit, because arguing against your own opinions stings in a way that reading a book never does.