12/10/2026
Elon Musk explained a concept recently on a podcast that is brilliant.
It’s incredibly simple:
Ego ÷ Ability
He said the most dangerous number in business might be anything greater than 1.
When your ego becomes bigger than your ability, you’ve entered the danger zone.
The irony is that this usually doesn’t happen when things are going badly.
It happens when things are going well.
You have a few wins.
People start listening.
Your company grows.
Your title gets bigger.
Your bank account gets bigger.
You start getting invited into rooms you weren’t before.
And somewhere along the way, confidence can quietly turn into certainty.
That’s when growth gets dangerous.
This is how smart leaders make foolish bets, ignore warning signs, and drive great companies off a cliff… because it never occurred to them that they could be wrong.
Success has an interesting side effect:
It can slowly remove the very humility that helped create it.
Early in our careers, we ask questions because we know we don’t know.
We seek mentors… study competitors… listen carefully… change our minds.
Then we become successful enough that people start asking us the questions.
And if we aren’t careful, we stop learning.
I’ve seen this in business, investing, and leadership… and I’ve certainly seen it in myself.
The goal isn’t to have less ability.
The goal is to keep increasing ability without allowing ego to increase alongside it.
That may be one of the greatest competitive advantages in business:
Rare ability + zero ego.
Imagine someone exceptionally talented but still genuinely curious.
Successful enough to have strong convictions, but humble enough to say:
“I might be wrong.”
Accomplished enough to teach others, but still walking into every room looking for something to learn.
That person is incredibly difficult to compete with.
Because while everyone else eventually begins protecting their reputation…
They keep improving.
And improvement compounds.
We talk a lot about economic moats… brand, technology, capital, distribution, intellectual property.
But maybe one of the greatest personal moats is much simpler:
Become exceptionally good at what you do…
and never become impressed with yourself.
That’s a formula for success in any environment.