[A leader] should be what he is calling others to be. (Paraphrase of John Piper, pastor and writer)
Piper was speaking of religious leaders, no doubt, but his observation is appropriate for anyone in a position of leadership. Some leaders are so jealous of their position that they fear anyone who might aspire to a position of authority. Such an attitude misses a central purpose of being a leader: training others to lead—even preparing a successor. That has lasting value.
If God has given you leadership ability, take the responsibility seriously (Romans 12:80