What NFL coaches could teach the wider business world

The beginning of a new year ushers in an ominous day in the NFL: Black Monday, the day when coaches are (typically) most at risk of losing their jobs. Black Monday happens the day after the regular season ends, a time when an especially harsh backward review is cast over the wins, losses, and total misses. 

The casualty list includes Raheem Morris, who lost his job with the Atlanta Falcons on Sunday, January 4; Kevin Stefanski, Pete Carroll, and Jonathan Gannon, each fired on Black Monday...