Thirteen conversations about one thing

What insights are provided by characters in "Thirteen Conversations About One Thing" in relation to the elusive nature of happiness?  Explore those insights and assess their worth.

• 13 Conversations is a fascinating look at the intersecting lives of a group of mostly unhappy New Yorkers
• suggests that the lives and destinies of seemingly unconnected people may be linked in some fundamental, perhaps even metaphysical way
• For that matter, happiness is the subject of every conversation we ever have: the search for happiness, the envy of happiness, the loss of happiness, the guilt about undeserved happiness.