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PhD Niven David

David Niven, Ph.D., is a psychologist and social scientist who teaches at Florida Atlantic University. He is the internationally bestselling author of books such as The 100 Simple Secrets of Happy People, The 100 Simple Secrets of Successful People, and The 100 Simple Secrets of Great Relationships. His work focuses on applying scientific research to improve happiness, success, and relationships through simple changes in actions and attitudes.

Self-Help Psychology
The 100 Simple Secrets of Happy People: What Scientists Have Learned and How You Can Use It
The 100 Simple Secrets of Happy People: What Scientists Have Learned and How You Can Use It
2006
 100 Secretos de la Gente Feliz, Los: Lo Que los Cientificos Han Descubierto y Como Puede Aplicarlo a su Vida
100 Secretos de la Gente Feliz, Los: Lo Que los Cientificos Han Descubierto y Como Puede Aplicarlo a su Vida
2003