Is it the fear of losing control or is it the fear of not knowing exactly what you will do once you have delegated or is it a bit of both?
The important first step is to understand that leaders cannot do everything themselves. Accepting this may be tough especially if you do not fully trust your resources. You need to decide whether the priority is to make sure you keep juggling all the balls or whether the priority is to step up to leadership. Are you going to stay put or are you going to take the lift today?