Francesc Miralles is the award-winning and internationally bestselling author of books about how to live well, together with the novels Love in Small Letters and Wabi-Sabi. Alongside Héctor García, he was welcomed to Okinawa in Japan, where the inhabitants live for longer than in any other place in the world. There they had the chance to interview more than a hundred villagers about their philosophy for a long and happy life.

Dale Carnegie is an American writer and lecturer who is also known for developing courses in self-improvement, interpersonal skills, etc. His self-help books are one of the excellent books in the world concerning personality development. Dale Carnegie (1888-1955) described himself as a “simple country boy” from Missouri but was also a pioneer of the self-improvement genre. Since the 1936 publication of his first book, How to Win Friends and Influence People, he has touched millions of readers and his classic works continue to impact lives to this day.