The best kind of accountability on a team is peer-to-peer. Peer pressure is more efficient and effective than going to the leader, anonymously complaining, and having them stop what they are doing to intervene.
Smaller groups of people can establish trusting relationships.
Teamwork requires some sacrifice up front; people who work as a team have to put the collective needs of the group ahead of their individual interests.
Teamwork is a strategic decision.
Team synergy has an extraordinary impact on business results.
People who have a sense of peace that their priorities are in the right place also have a sense of humility and a realistic view on life.