How can a voice establish authority? 1) It can come pre-loaded by reputation in the field, like Stephen King’s in On Writing or Twyla Tharp’s in The Creative Habit. 2) It can speak with the backing of extensive academic research, as Susan Cain did in Quiet. 3) It can cite its own professional or academic credentials, like Dr. Phil or Dr. Oz or Dr. Gupta. 4) Or its record of sales and success, like Tony Robbins or Eckhart Tolle. 5) The voice in self-help can establish credibility via its TV or web show, its podcast, its blog, its YouTube channel, its number of followers on Facebook, Twitter and
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