When building a team many people make the mistake of just picking people they know really well. While yes this brings some form of comfortability to the team, the end results might be poor. When working with friends, one tends to be complacent and it is hard to work cohesively, without getting distracted. Because you are working with your friends, a professional environment or culture will not be instilled. Therefore, when creating a team it is utmost important to create a team that will be professional and comfortable working together. Picking people that know more than you is valuable not only for the company but also for personal growth.