TJ Walker (live-stream, Aug 29, 2016) gives practical advice for reducing nervousness before conversations, speeches, or difficult communications: record yourself on your cell phone, watch and listen critically, identify what to keep or change, and repeat until you "love what you see"—only iterative recording-plus-review eliminates nerves, not recording alone.
Chapters
What do you do if you're nervous before you're about to have a conversation? Give a speech or presentation if you're nervous about your communication? If you are nervous, it's just the normal thing. It means you're a human being. Most human beings are nervous. Before giving a speech or having a difficult conversation or an important form of communication. Here's the number one thing you can do to dramatically reduce your nerves. And it starts by you reaching in your pocket. By that I mean pull out your cell phone, practice what it is you're trying to communicate, and just watch it on your own cell phone. Watch it and listen to it. Figure out what you like, what you don't like. Here's the key, though, and this is the part everyone always misses. And this is the thing you don't necessarily read in every other communication book. Simply practicing a speech or an important talk or a critique of a colleague on video, that is not enough. That's really not going to help. In fact, in some ways it can hurt. It only helps if you then watch it, figure out what you like, don't like, and do it again. And try to do more of what you like, less of what you don't like. And keep practicing until you love what you see, till you're convinced that you look your best, sound your best, come across comfortable, confident that your messages are clear and that your messages are understandable and memorable. If you can look at the video and say, wow, I really couldn't do any better than that, guess what? At that point, it becomes virtually impossible to be nervous. So please practice on video until you love what you see.