In Part One of this fascinating conversation, former actress turned psychotherapist Constance McCashin looks back on the remarkable journey that took her from a carefree childhood to becoming one of television's most beloved stars as Laura Avery Sumner on the hit primetime drama “ Knots Landing .” She shares how her career began at just five years old with an appearance alongside Clarabell the Clown from “ The Howdy Doody Show” , why her parents chose a normal childhood for her, and how a lifelo...