Most people are missing the point. It's not actually achieving the dream job, it's how far you can get Persuing it that's rewarding.
Seperate reality and fantasy, but shoot for almost unreachable goals to achieve all the goals inbetween.
Me? I'm looking at senior executive type position. I'm hungry for that power and money. I'm doing quite well getting there so far.
Fixedgear makes good points.
"The most merciful thing in the world, I think, is the inability of the human mind to correlate all its contents... some day the piecing together of dissociated knowledge will open up such terrifying vistas of reality, and of our frightful position therein, that we shall either go mad from the revelation or flee from the light into the peace and safety of a new Dark Age."
-H.P. Lovecraft