Effective Communication Guide [Part 4] - Resolving Disagreements
Your goal with a disagreement isn't to prove that your side is correct; it's actually the opposite - Try to tear down your own argument.
Don't view the situation as a "Us vs. Them" mentality. It's not a debate that you have to "win". If you come in with this mentality, the other side will respond in kind, and you will never get anything done.