Welcome to the Brilliance Brief. Every week, we break down leadership, mindset, and personal growth into something real and doable. Expect research-backed insights, a little storytelling, and practical ideas that actually fit into your life (even the messy parts).

For most of my career, I thought a great team meant a room full of stars.

Hire the smartest people.

Get out of their way.

Watch them win.

So I built that room. More than once.

And I kept running into the same wall.

The smartest rooms I led weren't my best teams.

They argued to win, not to learn.

They protected their turf.

The quiet ones stopped talking.

I assumed I was missing talent.

I was missing something else entirely.

My friend Ron Friedman spent years figuring out the secrets of the highest-performing teams.

He's a social psychologist. He doesn't trade in opinions. He runs the data.

For his new book, he surveyed more than 6,000 knowledge workers across finance, law, healthcare, and tech.

It's one of the largest studies of high-performing teams ever done.

He defined a "superteam" the hard way. People who rated their team a perfect 10 on effectiveness, and a perfect 10 against everyone else in their industry.

Then he compared those teams to the rest.

I thought I knew what he'd find.

I was surprised by a lot of it.

I created an infographic on 7 secrets of the highest-performing teams. Click the thumbnail above for the high-res version.

One line in Ron's research stopped me cold.

Feeling like the smartest person in the room is a sign you're on a weak team.

Read that again.

Not a sign you've made it. A sign something's broken.

On the best teams, nobody's hoarding the answers.

People take turns leading the discussion. They're 74% more likely to.

Leaders admit when they don't know. They're 33% more likely to say "I'm not sure."

And status feels roughly equal across the room. When big gaps show up, performance drops.

I read that and thought about my "star" teams.

The smartest person always knew it. And everyone else got quieter because of it.

I'd built rooms designed to make one person look brilliant. Not teams designed to win.

Ron found patterns I'd never have guessed:

On weak teams, people stay silent so they don't look clueless. Problems hide until they're expensive.

On superteams, the leader says it first. That one habit gives everyone else permission to speak up early.

Superteams are 50% better at avoiding the meetings that don't need to happen. They're 54% less likely to put a recurring meeting on the calendar.

The rule that drives it: no decision, no meeting. Bain found decision quality drops about 10% for every person past 7 in the room. Smaller rooms. Sharper calls.

A meta-analysis of 600+ studies found feedback makes performance worse more than a third of the time. Let that land.

Most feedback backfires. But on superteams, 90%+ of people say their leader's feedback motivates them without feeling like an attack. Adobe scrapped annual reviews for ongoing check-ins. Turnover dropped 34%.

This is the one that gets me. Most teams relax the moment something works. They stop questioning. They stop testing. And slowly, quietly, they fall behind.

The best teams do the opposite. They experiment about 50% more often.

That last one is personal.

Every time I've plateaued, it started the same way. I got comfortable. I assumed what worked yesterday would work tomorrow.

Ron also asked who people want on their team.

I expected "smartest" to win.

Nope.

The best teammates were knowledgeable, dependable, and good communicators.

The worst were unreliable, negative, and arrogant.

Brilliance didn't make the list. Reliability did.

One thing you can do today

Pick your next meeting. The one already on your calendar.

Ask three questions before it starts.

Is there a real decision being made here? If not, cancel it or shrink it.

Did I say "I don't know" out loud last week? If not, find a place to.

When was the last time I changed something that was already working? If you can't remember, that's your answer.

Ron's new book, Superteams, is out today. It was just featured in Harvard Business Review, and it's packed with findings like these.

I don't recommend many books. This one earned it.

You can find it here: https://geni.us/superteams

Talk soon,
Justin

P.S. What’s a great book you’ve read lately? I’m always adding to my reading list. Reply and let me know.