I learnt following very important lessons from this book:
True teams have a very clear set of priorities in following order:
1. Mission first
2. Needs of the team second
3. Needs of the individual third
In absence of rules people make thier rules. You need to carefully create and develop the code of honor for the team and ensure thier complete buyin.
To build a cohesive team, you should start with great players. Greatness doesn't happen by chance, nor does it occur in a vacuum. Greatness comes from, first, a passion for what you do; and second, a clear understanding of what you can and want to be best at.