How an EOS implementer builds culture, finds ideal clients, and coaches people

Executive overview

Most leadership teams don't struggle with strategy — they struggle with people: finding them, developing them, and having hard conversations before it's too late. Justin Cook, an EOS implementer based in Nashville, shares how he went from facilitating a partnership crisis at a security company to running a full EOS practice.

His lens is culture-first: EOS is, to him, the best way to build a great workplace and get things done. The framework creates clarity that becomes a filter for every people decision.

The core insight: specific positive feedback tied to core values is the most underused culture-building tool in any EOS company.

Justin's path to becoming an EOS implementer

• Joined a Nashville security company as an HR/operations leader; the two founders had merged companies without aligning on vision
• Facilitated partnership conversations using EOS after discovering it at a conference; signed up for Basecamp as an experiment
• Within one year: $1M swing back to profitability; four years later, the company became the largest locally owned commercial security firm in Nashville and exited in 2022
• Moved into consulting for home AV companies; began running EOS with five clients virtually during COVID
• Saw the franchise announcement while checking Basecamp for the next boot camp — treated it as confirmation and signed immediately

What drew him to EOS

• Background in Apple retail, where culture accounted for most of the two-week new-store onboarding — only one day covered products
• Previous systems felt too complex; EOS was simple enough that anyone could understand and execute the tools
• Sees EOS as the intersection of two personal passions: building great workplaces and getting things done

Culture work in the session room

• In quarterly sessions, presses leadership teams hard on core values: "Give me a specific example of someone outside this room who lived this core value in the last two weeks"
• Challenges teams to give specific positive feedback, not generic praise ("you're doing great")
• Key distinction from Apple: people receive general positive feedback and specific negative feedback — this erodes culture; flip the ratio on the positive side
• Tying specific praise to core values reinforces the behaviours the organisation wants to see
• When everything is going well, nothing stands out — intentionality is required to notice and name what's working

Favourite tool: the people analyzer

• Brings it in live during IDS when a team is circling an issue with a person and going nowhere
• Gives everyone two quiet minutes to run the person through the analyzer, then puts it on the board
• The issue becomes crystal clear immediately; removes emotional fog from the conversation
• Ties directly to his belief that helping someone find a better-fit role is an act of generosity, not a judgment
• Keeping someone in the wrong seat is unfair to them — they're not happy, and neither are the people around them

Ideal client: the 10x mindset

• After reading 10x Is Easier Than 2x, listed all clients on a whiteboard by mindset: goal-first vs. capability-first
• Clients with a 10x mindset left him energised after sessions; 2x-oriented clients left him feeling like he was pushing them somewhere they didn't want to go
• Now filters for this in discovery: shares the idea, asks if it resonates, and only moves forward with clients who are open to it
• Example: sent the book to all visionary clients ahead of annual planning; one team went from a 10-year target of "6 months cash reserve + 10% growth" to rallying around sharing $1M in profit with employees — more engagement than they'd ever had
• Key moment: an owner said "I don't think I deserve that" — breakthrough came from sitting with the possibility, not the math

Top client issues right now

• Finding people: the employer-employee power dynamic has shifted; the best clients adapt rather than resist
• Right-person-wrong-seat: the seat outgrows the person, but leaders delay the honest conversation until the relationship is damaged and the three strikes are a formality
• Economy concerns exist but remain vague — when issues are traced to root causes, they almost always come back to people

Parting advice: have the first conversation early

• Teams often wait until a situation is irrecoverable before initiating the first "strike" conversation
• By that point, trust is gone and there's no real belief the person can improve
• The first conversation, held early, is a gift: "I want you to succeed here, and I want to course-correct now while there's still time"
• Courage and love for people are the same thing in this context

Books that shaped his thinking

• Crucial Conversations (all-time favourite): reframed silence as equally problematic as aggression — silence is not neutral, it does not produce dialogue or results; shifted him from a "keep your cool" default into entering the danger
• Unreasonable Hospitality by Will Guidara: read like a thriller; stories and lessons on culture from one of the world's best restaurants
• 10x Is Easier Than 2x: transformed how he segments clients and how he runs annual planning sessions

On authenticity as an implementer

• Noticed a shift in his own voice — a "presenter mode" that wasn't authentic — when preparing a talk with his coach
• Started a grounding breathing practice before sessions to show up as himself
• Clients hired the real version; the authentic voice is what builds trust in the room