The inability to delegate is one of the biggest problems I see with managers at all levels. Find the best people to whom you can delegate, and know their strengths and weaknesses. If you think you can do it better, delegate anyway and try as hard as you can to close that gap by giving your colleague or employee the right feedback. Then recognize and accept that just because someone does something a little differently than you would, that doesn’t mean it’s wrong. What counts is that your goals get accomplished at a sufficient level of quality.