One of things I typically notice as work groups become stronger is that they become less reliant on formal leaders' emotional tones. They take ownership of the emotional and social culture of the group. Whatever the moods and attitudes of their leaders, they set and nurture their own group moods and tones in positive ways. This empowers the group to be less distracted and reactive because of them feel responsible to and for the leader's emotional states and habits. Their levels of focus increases and everything benefits.