Don't Worry--Be Happy with Marsha SinetarMP3 Download Using the Hansel and Gretel myth as a metaphor for life, psychologist and writer Sinetar speaks to those who are attempting to live their deepest calling in the midst of a seductive world. Happiness begins on the inside and does not depend on externals or material things, according to her. She emphasizes the power of a positive view without being pollyannish, and stresses how optimism is essential for the creative process to unfold.