I just retired after 41 years with the same company. Was responsible for field service operations - if you are a manager and can't learn to delegate you better get another position. The key to delegation is follow-up, follow-up, follow-up. People "respect what you inspect" - let them know what you expect, don't micro manage. Let them know you have an open door policy and that you want to be made aware of developing problems or are always available for input and feedback. When they do a good job tell them so, if they screw up don't kill them, let them know where the job went wrong, nobody is perfect and we all fail from time to time. Just don't make a habit of it.