An affirmation for public speakers:
The audience is not there to judge you. They’re there to learn and to be engaged and entertained, not to judge you. Give them what they’re there for.
In fact, the audience wants you to succeed. When you succeed, it’s not just you that gets something out of it. They do, too. And when you fail, their time is wasted. They’re rooting for you to give them what they’re there for.