Last month I was asked to speak on the radio with this directive: from your expertise, what is the one piece of advice you would give to our listeners? This was a tall (and, frankly, vague) order. How could I excavate my education, experience and knowledge to cull one salient bit of guidance? My stock advice for better living is a package deal, you know, like: pay attention to your thoughts and how they affect your feelings; learn how to communicate with respect and love; accept all parts of yourself so that you can live with authenticity; set appropriate boundaries…