I agree 100% with Ted but he worded it wrong.
Everyone enjoys doing what they do very well ( better than most) and if you are very good at something you tend to be paid well for it.
The bottom line, look for the thing that you can do better than most, you will enjoy doing it, others will notice and pay you well for it.
That's my problem... I take naps, watch movies, and am generally lazy better than anyone I've ever met. In fact, I believe that I've elevated those passtimes to a new artform. The problem is that no matter how much I search, I just can't find anyone willing to pay me to do them!
So, I guess I'll just have to be a network administrator for the next 20 or 25 years, then do those things on my own time. :-(
Mark