When I was an adolescent, I loved change. Even today, it is interesting. But it's not fun. It's too much stress, way too much work, and much too risky. Risk brings stress. Sometimes it's creative stress, good. More often it is dysfunctional stress, bad. But there is no choice. Everyday anything can change. If you are printer, it probably already has.
My only minor quibble is that the salespeople are there as much to respond to the change that is happening even more than convincing people to change. Convincing people to change is much too dangerous. It should only be tried by some of the top professionals, some of the time.
Businesspeople live with change constantly; every single part of their day has something to do with change. If you don't deal with or create change, you're out of business. Sales is a great example. We wouldn't have salespeople if we didn't have a need to send emissaries out to convince people to change.