great article... the only other thing I'd add is that when you become a manager, most of the time you are no longer "one of the guys" or "gals." And in many instances, you shouldn't be. This has been one of the hardest things for me personally. One minute you are on a team with a bunch of peers... the next your are the one deciding which way the ships sails. It can really change personal relationships with co-workers and have a big effect on your managerial role.