I think there's a tenth lesson we get from rock climbing. It means enough to me that I wrote it up over at david.dlma.com instead of here. But I have at least one sometimes-rock-climbs friend here (megami !) , so I've mentioned it here for those of you who don't follow me elsewhere.
All the rock-climbing life lessons are good, and the video is short, compared to the other TED videos I've seen.