As a professional sales performance consultant, trainer and coach for over 20 years, Terry has dedicated himself to the growth and development of consultative sales people, sales managers and their results. Over half that time he lived and worked in Chicago running Holden Corporation, an international sales training company working with sales organizations at EDS, Bell Canada, IBM, XEROX, HP, Ernst & Young and others.

Since the early 2000's Terry and his Sandler Training team have become recognized as the resource of choice for companies and individuals who are serious about taking their sales results and careers to the top. Independent research has shows that Sandler clients have a 70% performance advantage over their counterparts.