We all want to be happy, so why don't we experience more happiness?  Is happiness determined by circumstances, genetics, actions, choice?  Cinthia shares fascinating research and insights on the role we play in our happiness and who has the potential to be happy.  Anyone struggling with clinical depression will appreciate that Cinthia's approach offers hope but does not include the assumption that happiness is easy for everyone.  Also, did you know smiling affects your brain and body chemistry?