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Immunity to Change Kegan Lahey

People fail to make desired changes not due to a lack of will, but because of a powerful, hidden "immunity to change"—a system of competing commitments and big assumptions that brilliantly protects them from perceived dangers—and this book provides a structured process to uncover and overcome this immunity for individual and organizational growth.

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What it’s about

Even when our lives depend on it, we often fail to make necessary changes. This isn't a failure of willpower, but a sign of a powerful, hidden dynamic the authors call "immunity to change." This psychological immune system, composed of competing commitments and deeply held "big assumptions," actively works to maintain our current mindset, brilliantly protecting us from perceived dangers while simultaneously preventing growth. Kegan and Lahey provide a powerful, step-by-step diagnostic tool—the Immunity Map—to make this system visible. Through compelling case studies from business, government, and education, and practical exercises, they guide readers to not just understand their resistance but to design and run safe experiments to challenge their limiting beliefs. This book offers a transformative process to overcome personal and collective inertia, unlocking genuine developmental growth and enabling individuals, teams, and entire organizations to finally close the gap between their aspirations and their actual achievements.

The through-line

Who it’s for: The reader is a motivated leader, manager, coach, or individual who wants to make significant, lasting changes in themselves, their teams, or their organization but is frustrated by repeated failures and the powerful inertia of the status quo.
The problem: Despite sincere intentions, clear plans, and high stakes, you and your people are unable to make the changes necessary to improve performance, unlock potential, and meet new challenges. You feel frustrated, skeptical, and perhaps even pessimistic about the possibility of real change, wondering why smart, dedicated people (including yourself) get stuck in self-defeating patterns.
The plan: Reconceive the Challenge: Understand the difference between technical problems and adaptive challenges that require mindset transformation.
Diagnose Your Immunity: Use the four-column Immunity Map to uncover your hidden competing commitments and the 'big assumptions' that hold you back.
Overcome Your Immunity: Design and run a series of small, safe experiments to test and revise your big assumptions, systematically dismantling your immune system.
The payoff: You and your people finally make the breakthroughs you've been striving for. · You develop a more complex and capable mindset, able to handle a wider range of challenges. · Your team and organization become more cohesive, trusting, and effective, creating a culture of continuous development.

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