Nothing changes a person faster than the way you listen to them.
One of my students, Carl, has a coworker named Marty. Marty is loud, stubborn, arrogant, and acts like he is the only one who knows the right way to do anything, whether he does or not. Marty also says, “No” when you ask him for resources, time, help, anything.
Marty has managed to alienate just about everyone. He also talks a lot. When he starts to talk, people leave. If there's no escape, they endure Marty’s speeches, but always with a look of pain on their faces.
No one has managed to get Marty to listen. Every point they make about an issue triggers a counter-point from Marty that easily turns into an argument if they respond to it.
The problem is that Marty has influence and he can't be ignored. People like Carl rely on him for resources and cooperation. Marty's been there a long time, he’s knowledgeable, he’s just utterly unwilling to hear to anyone else's viewpoint.
As Carl asked me for help, it was obvious to me that Marty was unable to receive ANY incoming communication from others – he rejected all of it.
I also knew that no one was listening to Marty. They already “knew” what he was saying was wrong, so they would shut him out the moment he started talking and not hear him. They didn't realize they were doing the exact same annoying thing to Marty that he was doing to them.