One of the fears I have as a leader is that if I delegate my work maybe, just maybe, I won't be needed anymore. Is this a fear you have?

To be honest, I'm slightly embarrassed that I feel this way. Is it self-righteous to think that I am the only person who can do that task correctly? Will whoever I delegate to really not complete the task as well as I would have? Or is the real fear that if I delegate my work, then I won't be needed?