Vin Jang, a communication expert, teaches people to harness their voices and body language for greater confidence and life success. He emphasizes a three-step record-and-review process, focusing on five vocal foundations: rate of speech, volume, melody, tonality, and pauses. He also advocates for improved physical presence through hand gestures and storytelling techniques. Jang believes that impactful communication is a learnable skill, achievable within 3-6 months with consistent effort and a shift in self-identity.