I couldn't agree more with your article.  One of the biggest challenges I see in clients trying to modify their behavior is the requirement to get outside their comfort zone repeatedly and deal with the anxiety.  Classroom settings which provide information and the opportunity to practice in a 'safe' setting are a start in the behavior modification journey.  One of the difficulties in continuing the process in the work setting is the lack of a support system to help cope with the anxiety.  A coach provides the support, feedback and encouragement to help overcome this personal challenge.