failure to actually run the football operations will eventually make his external job harder. The Theranos CEO was always closing too -- but she failed to build an actual business.

Always Be Closing sounds great but you have to actually provide value to your customer or it becomes empty rhetoric and a house of cards that will collapse when your customer realizes there is no substance beneath the sales pitch. I'm being somewhat hyperbolic -- Mack has done a good job at UNC and they've won a fair number of games. But his focus on his external job may very well be out of balance with his focus on his internal job -- and that may not be sustainable.