Coming July 2026 From Wiley Publishing

The Hidden Leadership Variable

Why Consciousness - Not Competency - Determines Leadership Effectiveness

By Gretchen Griffin and Mark Yeoell

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The biggest determinant of your leadership effectiveness is the variable you couldn't see…

until now.

The Variable

In a world of nonstop complexity, even the most experienced and highly skilled leaders are hitting a wall. Traditional leadership competencies aren't enough anymore - because when pressure rises, leaders don't rise to their skills or experience.

They fall to the their level of consciousness.

This book reveals the unseen force beneath every leader's behavior - the internal operating system that shapes how you think, decide, communicate, and respond under stress.

Grounded in decades of leadership research and real-world practice, The Hidden Leadership Variable exposes the blind spot holding leaders back and shows how to consciously shift into a more effective way of leading - even in the face of accelerating complexity.

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What Most Leadership Books Miss - And Pressure Reveals

  • Skills & competencies don't determine effectiveness under pressure.

    You can know exactly what to do and how to do it - and still lose access to both when stress spikes.

  • Stress pulls leaders into unconscious reactive patterns that derail impact.

    The very moments that demand your best leadership are when reactive defaults take over.

  • Complexity, rapid change, and unpredictability amplify these default patterns.

    The leadership landscape has never been more demanding - it’s not getting easier. Old playbooks weren’t built for this.

About the Authors

Co-Creators of the Integrative Leadership Model™ (ILM3x3™)

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  • Leadership Development Expert & Executive Coach

    Known as a human catalyst, Gretchen specializes in helping leaders and organizations expand capacity, shift reactive patterns, and elevate effectiveness in the face of complexity. For more than 20 years, she has designed and delivered transformational leadership programs across financial services, government, manufacturing, law, healthcare, and Fortune 500 companies. Her work integrates developmental psychology, systems thinking, somatic awareness, and practical organizational insight to create experiences that change how leaders think—and who they become. Learn more at https://www.gretchengriffin.com/

  • Conscious Leadership Strategist & Facilitator

    With a career spanning decades of advising executives, senior leaders, and global organizations, Mark brings deep expertise in adult development, vertical leadership, complexity, and the intersection of consciousness and performance. His work blends rigorous developmental theory with practical application, helping leaders evolve beyond reactivity and lead with clarity, wisdom, and integrative awareness in rapidly changing environments. Mark is widely recognized for his ability to translate complex leadership ideas into accessible, transformative pathways. Learn more at https://gilgroupinc.com/

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