"A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects."
-Robert A. Heinlein
Hopefully we're all going to do a lot of things in our lives; be a lot of different things to different people. Some of it we'll love, most of it we'll probably hate. You don't need some kind of definitive mark even if you are working toward a singular dream or goal. If any of us are doing halfway decent I think we'll get that and then some more in the bargin.