>> april renney, an american born to a finnish father has spoken all over the world about navigatingvolatility. >> everyone is dealing with different kinds of change, and everyone wants to be happy. >> reporter: she thinks americans can learn a lot from finnish culture. the united states is 15th on this world happiness report. what are we getting wrong in the united states about being happy? >> we have a real challenge with trust in the united states. for many people, the hardest person to trust is themselves. or if your default is mistrust, it makes it very hard to be happy, satisfied. it's a straight shot to fear and anxiety. >> what traits have you notice ready consistent in happy people? >> happier people have a deep connection to gratitude. they express gratitude every day. happiness is something that can be learned, but it has to be practiced. >> reporter: on the final moderning of the master class, i catch up with the americans one last time. how has the week been? >> i wonder if you ask a butterfly ask what is it like becoming a butterfly? the butt ever fly would be how do i