Mark by Mark Graban

Mark Graban: Lean Leadership & More Feb 9, 2026

Stop Yelling: Why One-Size-Fits-All Leadership Fails | Olaolu Ogunyemi

Yelling doesn’t make you a better leader—it just makes leadership less effective. Former U.S. Marine officer Olaolu…

Mark Graban: Lean Leadership & More Feb 9, 2026

“I Made a Marine Cry”: A Leadership Mistake About Authority, Trust, and Self-Discipline

A Marine officer reflects on a leadership mistake that revealed why authority alone never builds self-discipline. “I was…

Mark Graban: Lean Leadership & More Feb 9, 2026

I Made a Marine Cry — A Leadership Mistake That Changed How I Lead | Olaolu Ogunyemi

What happens when a leader realizes their approach caused real harm? In this episode of My Favorite Mistake, U.S. Marine…

Mark Graban: Lean Leadership & More Feb 7, 2026

Startup Mistakes That Cost You Later: Jason Sherman on Co-Founders, Smart Money, and MVP Learning

What early startup decisions quietly create the biggest problems later on? In this episode of My Favorite Mistake,…

Mark Graban: Lean Leadership & More Feb 6, 2026

Why “Fail Fast, Fail Often” Is Bad Leadership Advice

“Fail fast, fail often” sounds smart—until you repeat the same mistake. In this clip, Ray Zinn explains why failure…

Mark Graban: Lean Leadership & More Feb 5, 2026

Why Most People Won’t Admit Mistakes (And Why Leaders Must) - CEO Ray Zinn

Most mistakes don’t get fixed for one simple reason: people won’t admit them. In this clip, Ray Zinn explains why…

Mark Graban: Lean Leadership & More Feb 4, 2026

Mistakes Are Like Glue — Fix Them Before They Harden (Ray Zinn)

Mistakes aren’t the problem. Waiting too long to fix them is. In this clip, Ray Zinn shares a simple metaphor leaders…

Mark Graban: Lean Leadership & More Feb 3, 2026

How Great Leaders Fix Mistakes (4 Steps That Actually Work) -- Ray Zinn

Most leaders rush past this—and that’s why mistakes keep repeating. In this clip, Ray Zinn shares a simple but…