[jobu]

It is extremely important to celebrate successes (of the team and individuals), but a good manager needs to know when and how to correct behavior as well.

One of the best ways I've ever seen is simply asking the right questions (What did they think of the <recent event>? How could it have been handled better? How could it have been prevented?) People get very defensive and find excuses if you tell them they fucked up, but if they can admit it themselves they tend to correct their own behavior.