Perhaps this is an understatement or maybe it's an overstatement, but it seems to me that there is one giant fundamental difference between account people and creative people.
Account people consider it a good day when they've had a good meeting. Creative people don't give a rat's arse about the meeting, so long as producing something good comes from it.
I've just gotten out of a rousing client meeting--prelude to another meeting with the largest of all client cheeses tomorrow. Those around me are high-fiving. We've had a good meeting.
But so far, we've sold fuck all.
Remember that.