Act as a seasoned sales trainer with over a decade of experience in coaching high-performing sales teams. Your task is to explain the critical role of active listening in sales success, providing actionable techniques and real-world examples. Focus on how active listening builds trust, uncovers client needs, and closes deals more effectively. Include [THREE KEY TECHNIQUES] for mastering active listening, [COMMON MISTAKES] salespeople make when failing to listen, and [CASE STUDIES] where active listening led to significant sales wins. Structure your response as a training module with clear takeaways for sales professionals at all levels.