10 Elon Musk Quotes Every 40-Year-Old Should Live By

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By Don Lair Published

Key Points

  • Tesla (TSLA), SpaceX, and X (formerly Twitter) are central to Elon Musk’s business empire spanning electric vehicles, space exploration, and AI-driven social media platforms.

  • Musk’s philosophy emphasizes that success requires breaking through constraints, embracing failure as part of innovation, and maintaining unwavering persistence toward important goals regardless of odds or fear.

  • If you're focused on picking the right stocks and ETFs you may be missing the bigger picture: retirement income. That is exactly what The Definitive Guide to Retirement Income was created to solve, and it's free today. Read more here
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10 Elon Musk Quotes Every 40-Year-Old Should Live By

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From his early role at PayPal to DOGE, Tesla, SpaceX, Starlink, and more, Elon Musk is certainly everywhere, all at once. Add to his success story his purchase of X and the rise of Grok in the world of AI, and it’s easy to see why Musk is one of the most important and most powerful individuals on the planet.

Whether you love or hate Elon, there’s no denying that he’s also a titan of business. Which is why his advice so important for a 40-something to hear.

1. “If the rules are such that you can’t make progress, then you have to fight the rules.”

Pascal Le Segretain / Getty Images Entertainment via Getty Images

Elon Musk knows a little something about breaking the rules.

It’s hard to imagine a more Elon Musk quote than this one, considering he is someone who seemingly makes up the rules as he goes. While it’s hard to argue that every 40-something should follow the same advice, the overarching theme of this quote remains true in that if you can’t push past a ceiling, you have to figure out how to bust through it.

2. “Failure is an option here. If things are not failing, you are not innovating enough.”

Tesla CEO Elon Musk
Maja Hitij / Getty Images News via Getty Images

There is something to be said about Elon’s view on failure.

The reality of this quote is one that Musk knows all too well, as his companies have often seen big challenges that might have otherwise crushed other names. If you’re a 40-something, this should serve as a reminder that failure is okay, but what’s more important is that you keep trying until you push past the failure with something that succeeds.

3. “Persistence is very important. You should not give up unless you are forced to give up.”

Elon wouldn’t be where he is without persistence.

Building on Musk’s belief that failure isn’t an option, this serves as a reminder not to give up, especially when protecting your “foundational integrity.” As seen in the ongoing 2026 legal battles regarding OpenAI’s original mission, persistence is about fighting to keep the purpose of your work intact as you scale.

4. “When something is important enough, you do it, even if the odds are not in your favor.”

Tesla CEO Elon Musk
Win McNamee / Getty Images News via Getty Images

The odds won’t always be in your favor, says Elon, but that’s not a reason to stop.

There’s a consistent theme in Elon’s quotes that any 40-something should consider: if you want to achieve something, you must figure out how to do it, regardless of the odds. While your success might not match that of Musk’s, everyone wants to achieve something in life, no matter their age.

5. “Always take the position that you are to some degree wrong, and your goal is to be less wrong over time.”

Justin Sullivan / Getty Images News via Getty Images

It’s okay to be wrong, but you have to be less wrong over time.

Musk recently supplemented this by stating it is better to be an “optimist and wrong than a pessimist and right.” For those in their 40s, this is a vital psychological pivot; focusing solely on avoiding errors can lead to risk-aversion, whereas refined optimism allows for the “less wrong” iterations that lead to breakthroughs.

6. “In order to make the right decisions, you have to understand something. If you don’t understand something at a detailed level, you cannot make a decision.”

Scott Olson / Getty Images

It’s important to deeply understand whatever you are working on.

This is the core of Musk’s “First Principles” thinking. By the time you reach 40, you should have enough experience to dive into the technical details of your field; without that depth, you risk becoming a “rudderless ship” unable to navigate complex professional pivots.

7. “It’s OK to have your eggs in one basket, as long as you control what happens to that basket.”

Loren Elliott/Getty Images

Elon knows all about not putting your eggs into one basket.

Musk’s current push into the “Terafab” semiconductor sector is the ultimate example of this. By vertically integrating—owning the chips as well as the products—he gains full control over the “basket,” a high-stakes strategy that mid-career professionals can use to reduce their dependence on external market factors.

8. “There are just times when something is important enough, and you believe in it enough, that you do it in spite of the fear.”

$1 million
Photo by Michael Swensen/Getty Images

Part of winning is doing, says Elon.

Can you imagine a world in which Elon Musk decided to stop working on some of his biggest projects out of fear? The same rule applies to everyone in their 40s; fear of mid-life instability is natural, but it shouldn’t be a barrier that prevents you from taking a calculated leap toward a new venture.

9. “Life needs to be more than just solving everyday problems. You need to wake up and be excited about the future.”

Elon Musk Twitter
Scott Olson / Getty Images News via Getty Images

Elon remains excited about the future of his businesses.

At the 2026 World Economic Forum, Musk expanded on this, predicting an “explosion in the global economy” driven by AI and robotics. For a 40-something, this means moving beyond surviving daily tasks to positioning yourself within the “Era of Abundance” that ubiquitous technology is currently creating.

10. “Great companies are built on great products. When the product starts to become shoddy and uncompetitive, so does the company.”

2025+Tesla+Model+Y | 2025 Tesla Model Y RWD in Midnight Silver Metallic, front right

Tesla is already the best EV on the market and is likely to continue being so.

If you are entering a new phase as an entrepreneur in your 40s, Musk’s push for “human-robot productivity parity” serves as a benchmark. You cannot just aim to be “good enough” in an AI-accelerated market; your product must be great enough to compete in a landscape where the speed of innovation is reaching the “Singularity” timing he warned of earlier this year.

Photo of Don Lair
About the Author Don Lair →

Don Lair writes about options income, dividend strategy, and the kind of boring-but-durable investing that actually funds retirement. He's the founder of FITools.com, an independent contributor to 24/7 Wall St., and a former writer for The Motley Fool.

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