The renowned musician Carlinhos Brown shares his secrets for maintaining an optimistic attitude towards life and inspiring others to look on the bright side.

Tal Ben-Shahar, the "professor of happiness," shares the keys to success: social relationships, true friendship, gratitude, and an appreciation for the good things in life.

Pilar Sordo, clinical psychologist, popularizer and researcher, reflects on the importance of humor in our lives and how laughing more can transform our daily lives.