Everything I need to know I learned in Greyhawk

From Javaworld, a case where Dungeons & Dragons helps someone succeed in business:

Throughout my 20s and 30s, I played D&D and other fantasy role playing games at least once a week. Doing so did more than teach me the rules of combat or proper behavior in a dragon's lair. I gained several skills that truly did help me in my career.

Several common-sense pieces of advice follow, as seen through a D&D lens. One addition I might suggest, however is don’t piss off your healer. How that applies to the business world, I’m not sure, but there must be some connection.