1. Great leaders develop strong teams by understanding human psychology and motivating people. They avoid common sins like not respecting team members and suppressing talent. 2. Winning teams are built by selecting the right people. Leaders must find individuals that fit both the job requirements and team culture. A thorough selection process including interviews and references is important. 3. Developing a team requires clear vision, defined roles, communication, appreciation, and continuous improvement. Leaders treat members as individuals, focus on success, and encourage underperformers to find a better fit.