"Three (3) intrepid law geeks, specializing in knowledge management, internet marketing and library sciences commented on Bradford Power expertise on process innovation and change."
He commented on how change is 10% systems and processes and 90% people. So people is where you should focus your change resources.
P = Purpose. Employees that have a known, shared purpose are happier and more motivated, having an understood, shared goal will drive people to success.
A = Autonomy. People, especially in knowledge worker roles, do not like to be micro-managed. They prefer to be given a goal and some resources, along with the autonomy (and responsibility) to get it done.
M = Mastery. People also like to be masters of their domain (ref, Seinfeld). They enjoy being respected as a knowledgeable expert on a given subject.