Michael Martin is a trader and instructor for MartinKronicle. His show deals with the emotional and psychological aspects of trading and managing risk. Martin's own book is called "The Inner Voice of Trading" and features interviews with Michael Marcus, Bill Dunn, and Ed Seykota - who also wrote the Foreword.
Risk a fraction of what you're normally risking per trade. You will need to learn how the new component or strategy will work in concert with your existing rules.