Is there a way you can categorize sources of happiness?

The book On Romantic Love points out that being happy is a lifelong goal that often has subordinate goals, like being successful in a career or having intelligent or successful children, as paths you can take to become happy. Give examples of goals or events that might make someone happy. Is there a way you can categorize sources of happiness? How does the main character attempt to achieve happiness in the movie The Words, http://www.imdb.com/title/tt1840417/?

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