New York - Do you ever wonder why one person can be so drawn to another? Why is it that certain people have the ability to make others feel good? The answer is surprising. Wall Street Journal best-selling author, Dr. Rich "The Smile Dr." Castellano shows the secret to happiness is through non-verbal communication, with the release of his latest book, "The Smile Prescription," out August 8th.

Told through a first person narrative, "The Smile Prescription" takes readers on Dr. Castellano's journey to understand the unexpected and dramatic impact our non-verbal communication has on everyone we meet. From wacky Harvard research studies, to daily observations at his plastic surgery practice, Castellano proves that facial behaviors influence and reveal the wiring of the brain. As a facial analysis expert, Castellano has analyzed hundreds of thousands of faces, which allows him to provide a user-friendly and fun guide showing how facial expressions can be used as a tool to dramatically improve quality of life.

"Smiling and humor stimulate reward centers in our brain and it can radically change the way you think, live your live and interact with other people," says Castellano, who is on a crusade to make the world a happier place one face at a time. “Cultivating your authentic smile will change the way you perceive the world and how the world perceives you.