All teams need a team leader to focus their efforts, set guidelines, and deliver results. How you go about selecting your team leader depends largely on the mission, management, organizational culture, and development of your team.
When you watch a high-performing team in action, you realize that they have some habits, rituals, and ceremonies that support the team's work. Here are some examples that I have seen effective teams establish to create a certain purpose and put them in a different mindset.