Think about the first thirty seconds of a sales presentation. Is your audience ever with you from the get-go? Some are there from your first word. Most will take some convincing just to get on the same page.
Once you've developed your main points, keep in mind these three hurdles to get past the jaundiced eye:
Cynicism - overcome by confidence in the person
Skepticism - overcome by trust in experience
Fatalism - overcome by belief in the ability to influence the situation
Weave these three into your agenda outline. If you conquer these, you're on the path to a persuasive argument that begs for a call to action.