How to Use Nonverbal Scripts in Presentations

A lot of people feel very nervous, communicating, presentation, whatever. What do you say to yourself? You get alluded to a little bit of it. This is valuable. This content has helped people. Let's say there's a newer leader that doesn't have a lot of data to prove that their content helps people. They're coming thoroughly prepared and yet they're still a little bit unsure of themselves. What would you say internally to help them step up with real confidence to connect with people and engage them towards something that matters?