Ep. 153: "Raging Psychopath" to Transformational Coach with Lee Mateer

In this episode of The Mental Mettle Podcast, Coach Matt Thomann sits down with 24-year coaching veteran and fellow Millikin alum, Coach Lee Mateer of Taylorville High School.

By his own words, Lee used to be “the raging psychopath” on the sideline — yelling, screaming, cursing, and tying his entire identity to wins and losses. He was the classic old school, outcome-obsessed coach who wore misery and grittiness like a badge of honor.

Then life hit at home.

Lee’s transformation didn’t begin at a clinic or in a playbook. It began with deep personal struggle: watching his daughter enter high school and battle an eating disorder rooted in crippling anxiety. Seeing his own child waste away and suffer shook everything he thought he knew about toughness, mental health, and what today’s kids are actually fighting through.

That crisis forced him to confront his ego, his fear, and his entire coaching philosophy.

In this conversation, we dig into:

• How an old school “tough guy” coach became the self-described “raging psychopath” on the sideline
• His daughter’s battle with anxiety and an eating disorder—and how it broke him and opened his eyes
• Why that personal struggle became the turning point for his coaching, parenting, and faith
• Moving from yelling, fear, and control to connection, standards, and real trust
• The three “sins” he sees in all of us: fear, ego, and laziness—and how they show up in coaches
• How trauma and past experiences drive emotional volatility in athletes and adults
• Building a 17-lesson leadership and character curriculum into his strength program
• Getting teenage athletes to honestly reflect on jealousy, fear, and toxic masculinity
• Why you can still demand toughness and excellence without being a miserable coach
• How faith and Scripture reshaped his definition of success on and off the field

If you’ve ever felt burned out, bitter, or trapped in the old school vs new school coaching battle—and especially if something at home has made you question everything—this episode will hit close to home.

This conversation is exactly what my Ember to Inferno program is about—helping coaches intentionally develop that third skill set:

• Mental skills
• Emotional regulation
• Response to adversity
• Program standards and culture systems

Coaches go to clinics every year to sharpen their press, their zone defense, their ball-screen offense. But if you truly believe culture > X’s and O’s, your professional development should reflect that.

If you’re thinking, “I love this stuff, but I don’t know how to start,”
that’s where I come in.

Contact:
matt@mentalmettlecoach.com for a free coaching session with Coach Thomann

www.mentalmettlecoach.com

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