It may be useful to find out more about yourself.
Try going to http://www.authentichappiness.sas.upenn.edu/Default.aspx and taking the VIA Strengths Survey.
Positive Psychologists have found that focusing on your top strengths better promotes happiness. This is kind of an obvious finding, but it is good to know what those character strengths are.
I have a friend who is undergoing a job change that has caused him to question which direction to go, and taking this test helped add some perspective.