"The less confidence leaders have in their ability to stand alone after making a decision, the less likely they are in making one." Edwin H. Friedman, A Failure of Nerve Commenting about the impact of the reactive, herding instinct going in America on leaders, Friedman says,
"It is always easier to be the least mature member of a highly mature family, than a mature member of a highly regressed system. The major effect of this system on leadership is it hinders, if not cripples, the capacity to be decisive".
I highly recommend A Failure of Nerve if you are a leader trying to understand people's emotional issues and how they impact your willingness to lead.