Is it possible to have a good life without "following your passion"? This guy found out.

Here is an interesting New York Times article by a man who did not have one overarching career passion as a young man. (Same as me.) He notes that the "follow your passion" mantra really didn't apply to him, and actually can scare people about "MAKING THE WRONG CHOICE."

However, he speaks to the qualities that can make any career enjoyable and successful.  I hope it is true with you.