"Follow your passion" is dangerous advice.
The traits that can make your life interesting, I learned, have very little to do with intensive soul-searching. Princeton Web Solutions [Cal's high school web company], in other works, inoculated me against the idea that occupational happiness requires a calling.
The world is filled with opportunities like Princeton Web Solutions waiting to be exploited to make your life more interest. Any job/challenge is interesting for a sufficiently short period of time. This isn't a downside.