I cannot trust a man to control others who cannot control himself. (Robert E. Lee, Civil War general)
It’s a frightening sight to see someone out of control, a person who, perhaps, is addicted to a dangerous substance that takes control of the user. Others just can’t control their appetites or their temper. They are the people, as Lee suggests, you don’t want to be in a leadership role, where they have authority over others. Self-control is an essential requisite for leaders.
Now the [leader] is to be above reproach . . . temperate, self-controlled, respectable . . . (1 Timothy 3:2).