Socrates said that the unexamined life is not worth living. Although I only partially agree, I do think that self-evaluation can contribute greatly to a well-lived life. One effective way to learn about yourself is through personality tests. Here's a set of questionnaires to help you examine your attitudes toward happiness, meaning, and other related subjects.
http://www.authentichappiness.sas.upenn.edu/questionnaires.aspx