You know the warning printed on outside rearview mirrors—the one about objects being closer than they appear? Did you ever think that your speeches and presentations are like that?
When you've put in long hours on your content and (I hope you have) practiced, your talk may just be too big and too close for you to see it properly. By "properly," I mean looking at it in terms of how it will affect your audience.
Of course, if you've prepared without your audience fully in mind, you've already taken a long hike down the wrong road. The time to consider your speech's effect on the audience is before you write down a single thought or word. That's because your specific purpose in giving this talk should be the whole reason you're speaking.
Please select this link to read the complete blog post from Gary Genard.