Speakers find joy in public speaking when they realize that a speech is all about the audience, not the speaker. Most speakers are so caught up in their own concerns and so driven to cover certain points or get a certain message across that they can't be bothered to think in more than a perfunctory way about the audience. And the irony is, of course, that there is no hope of getting your message across if that's all the energy you put into the audience. So let go, and give the moment to the audience.