Os 100 Segredos das Pessoas Felizes By David Niven Books / Paperback Body, Mind, Spirit › Self-Help Publisher: Sextante, January 2001 Price $13.89 Free Shipping Send to a friend Used - Good Good condition. Portuguese edition. (Happiness, self-help, books in Portuguese) $13.89 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.