It’s relatively easy to be a successful child. All you’ve got to do is learn how to be cute, get attention, and cry when you’re hurt or hungry. Learning how to be a teenager is much harder; I’m not sure anybody’s good at it. I certainly wasn’t. As for becoming an adult, I’ve been working on that for decades and making very, very slow progress.
Everything gets harder as you get older, and becoming a good manager is no exception.
http://blogs.bnet.com/ceo/?p=2833&tag=nl.e713
Become adept at 5 things: finance, selling, presenting, negotiating, and business communications.