Charlie Munger spent more than four decades as Warren Buffett’s partner at Berkshire Hathaway. He was famous for his blunt opinions, and many of his sharpest were about things smart people should avoid if they want to build wealth.
Munger often said that he and Buffett gained a long-term edge simply by trying to consistently avoid being stupid. That mindset shows up in each of the five habits below, all of which are time and money sinks he steered clear of for his 99 years.
1. Randomly Gambling Emotionally in the Stock Market
Munger had no patience for emotional trading. Buying a stock because it’s hot and dumping it the week it drops is how people turn a brokerage account into a slot machine, and he watched plenty of investors do exactly that, only to walk away poorer.
His alternative was dull on purpose. Treat every share as a piece of a real business, figure out how that business earns its money, and pay a price that leaves some room for being wrong.
Emotional speculation runs on luck. When the luck runs out, the losses can be ugly, and someone who keeps jumping in and out of positions randomly with no edge never gives compounding enough time to work.
Charlie Munger said, “The first rule of compounding is to never interrupt it unnecessarily.” That sounds easy on a calm day. It gets a lot harder when a stock an investor has held long-term based on fundamentals drops sharply in a single week, and every headline tells you to sell. If an investor wants to become wealthy, they must stick to their investment strategy and understand their edge.
2. Attending Meetings with Overly Complex Pitch Decks
Munger hated jargon. Glossy pitch decks, private placement offerings stuffed with projections, and corporate meetings packed with buzzwords all struck him as a wasted afternoon.
His test was in plain English. If someone can’t explain how a deal makes money in a few clear sentences, the person pitching it is probably covering up a weak spot. Sometimes they don’t understand the thing themselves.
He saved some of his harshest words for adjusted earnings figures that made a business look healthier than it was. At a Berkshire annual meeting, Charlie Munger said, “I think that, every time you see the word EBITDA, you should substitute the words ‘b*llshit earnings.'”
You don’t have to sit through the whole presentation to put that advice to work. Ask how the business actually profits from its customers based on the numbers, then pay attention to how long it takes to get a straight answer.
3. Chasing Every “Hot” Trend or Unfamiliar Industry
Every few years, a new mania grabs the market, and everyone at the neighborhood barbecue suddenly has an opinion on it. Munger mostly shrugged. If he couldn’t understand a business well, he set it aside and went looking for something else.
Plenty of investors do the opposite. They lose capital investing in an industry they know nothing about for one reason: their friends seem to be getting rich from it.
Wandering outside what you actually know raises the odds of a big mistake. Munger and Buffett called the safe zone a circle of competence, and they stayed stubborn about it for decades while other investors chased whatever was popular that year.
Charlie Munger put it this way: “We have three baskets for investing: yes, no, and too tough to understand.” Most ideas landed in that third basket. He seemed perfectly comfortable leaving them there.
4. Keeping Up with the Lifestyles of Peers
Munger had little respect for spending meant to keep pace with the neighbors. A bigger house or a nicer car bought to impress a social circle eats money that could have been compounding quietly for twenty years.
Most real wealth never shows up in a driveway. It sits in brokerage accounts and paid-off assets where nobody at the dinner party can see it. Munger himself lived in the same Los Angeles house for decades.
He often talked about envy with open contempt. Charlie Munger said, “Envy is a really stupid sin because it’s the only one you could never possibly have any fun at.”
There’s always someone with a bigger boat. Trying to catch that person is a race with no finish line, and the entry fee comes straight out of your savings account every month.
Munger described his own goal in very plain terms. Charlie Munger said, “I did not intend to get rich. I just wanted to get independent.”
5. Participating in “Bureaucratic” Networking
Lots of executives fill their calendars with industry conferences, dinner parties, and coffee meetings that go nowhere. Munger spent a huge share of his working life sitting in a chair with a book open in front of him.
He believed good judgment came from long stretches of uninterrupted reading and thinking. Small talk at a networking mixer rarely teaches anyone how a business makes money or why it might fail.
His view on reading was about as absolute as he ever got. Charlie Munger said, “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.”
He also thought steady learning beat raw brainpower over a long career. In his 2007 commencement speech at the USC Law School, Charlie Munger said, “I constantly see people rise in life who are not the smartest, sometimes not even the most diligent, but they are learning machines.”
Munger once joked that his children saw him as a book with a couple of legs sticking out. For a man worth billions, he never seemed bothered by the description. He earned that reputation with the hours other executives spent shaking hands at conferences and trading business cards over cocktails. Munger gave those hours to reading instead, and the trade paid him far better than any networking event ever could.
Conclusion
Munger built his fortune largely by saying no. He skipped emotional trades and slick pitch decks, ignored manias he didn’t understand, and had zero interest in matching anyone’s lifestyle or filling his week with pointless meetings or networking.
Dropping even one of these habits frees up real money and real hours. Pick the one costing you the most right now, and spend that recovered time reading about a business you’d be happy to own for the next ten years.