It's not easy to stay cool and engaged when things get heated in meetings, negotiations, or difficult conversations. We've all been there. You might say something that you later regret, or get stuck on one point trying to prove that you're right, ultimately losing sight of the bigger picture. Maybe you've damaged trust in a broader relationship with a colleague, client, vendor, or perhaps your spouse or kids. At times like this, you might wish you could hit that reset button and have a do-over. With so much at stake, how do you keep a heated conversation constructive?