Scott Walker's book, "Order out of Chaos," provides insights into negotiation techniques based on the author's experience as a hostage negotiator. It explores the mindset needed for success in high-pressure situations, including building resilience, developing emotional intelligence, and managing stress. Walker emphasizes the importance of active listening, empathy, and understanding the other person's perspective to build rapport and achieve desired outcomes in any negotiation, whether it's in a business setting or a personal conversation.