We will explore the transformative journey from being a penetration tester who identifies vulnerabilities to a security engineer who builds the solutions. This talk will illuminate how the intricate process of designing, implementing, and deploying security fixes provides a profound and unparalleled understanding of system architecture, threat models, and the practical challenges of defense. I'll share key insights and examples demonstrating that by shifting our focus from merely breaking things to meticulously fixing them, we can cultivate a more resilient and holistic approach to security, ultimately elevating our craft and building a safer digital world.