Book excerpt: Many authors write about leadership, but few have lived it at the level of Lt. Gen. Rick Lynch. The world is in desperate need of authentic, reliable leaders at all levels of society. Twenty-first-century leaders face unprecedented challenges and rapid change, and leaders with a keen ability to adapt are in high demand. Sharing stories from the front and insights born from overcoming adversity on both the battlefield and in the boardroom, Lynch reveals impactful leadership principles ranging from earning respect and working effectively with diverse teams to adapting to new technology and laying a foundation of trust built upon integrity. With refreshing directness, he shows readers how to make wise calls and gain the confidence they need to lead in our ever-changing world.