Traits of good coaches

What makes some coaches better than others? Why are they appreciated more than others? As you'll see in the article that recently appeared in the Sporting News, players commented on aspects such as "work ethic, preparation, disciplined and fair but stern attitude, takes care of his players, etc." Read on:

http://www.sportingnews.com/nfl/feed/2010-09/sns-top-nfl-coaches/story/sideline-to-sideline-whos-the-best-nfl-coach