A vital team characteristic is the ability to overcome adversity. Any team acquires experience and endurance as it learns to fight back. This in turn builds the kind of character which seldom crumbles at a time of crisis or testing.
There's a misconception about teamwork. Teamwork is the ability to have different thoughts about things; it's the ability to argue and stand up and say loud and strong what you feel. But in the end, it's also the ability to adjust to what is the best for the team.
I don't believe in team motivation. I believe in getting a team prepared so it knows it will have the necessary confidence when it steps on a field and be prepared to play a good game.