As a manager you've been taught, either by your peers, or through hard knocks, to avoid micromanaging your teams. You quickly learn that micromanagement only alienate people. Anyway, I have noticed that delegation appears to be a difficult concept for inexperienced managers that I had the opportunity to mentor. Delegation does not come naturally. Newly appointed supervisors often think “If you want something done, do it yourself.”
Delegation of authority is an investment and you need patience and time to see your investment come to fruition. It may take a few weeks, a few months, or a year but your patience will be rewarded in the end.
This is the theme of Jurgen Appelo's humorous article.