I 100% agree. And one of the tricks I believe for this to work is that the first step is listening. And when you're tempted to talk, don't. Listen more. Ask questions in the vocabulary they're using if you want clarification, but primarily just keep listening.
Because that is how you figure out what it is they actually care about.
Yep! I agree as well, the less you speak, the more you listen, the better!
That is great advice for anyone, anywhere!
Thanks! This is the condensed version of what the OP's manager is asking him to do. As mentioned elsewhere, also keep in mind you can't change peoples' minds or make a decision for them, you have to present the your case so that your audience comes to the conclusion you want them to.