Everyone Has a Role to Play and Value to Add
Sport can often shine a light on "the best", but when it comes to team sports, as cliche as it sounds, you really are only as strong as the sum of your team. Regardless of whether you're the best (or worst) player, everyone has a role to play, and value to add. It's learning how to recognise this value, in both yourself, and others that will lead to success.
Learning to Put Your Trust in Others Is Hard
Putting your trust in the hands of others, particularly when it's something you really care about can be a tough pill to swallow, but it's also a lesson that comes hand-in-hand with team sport. Just like any good relationship, no team ever succeeded with a foundation built on distrust. Learning to trust that your teammates are working as hard, care as much, and are doing what they are supposed to be doing, will allow you to let go of any hostile thinking, and let you focus on the task at hand with the kind of confidence that can only come from knowing your team has got you.