I have met many businessmen who are afraid of delivering public presentations for various reasons. It is surprising that such people have usually no problems with one-to-one meetings or with talking to small groups in a non-official environment.
There seem to be several reasons why business people could be very nervous before delivering public speeches. Below are some of them.
1. OUT OF PRACTICE
Poor performance at public presentations can be temporary. It can result from a simple lack of experience. It includes uncontrolled mimics, gestures, behaviours, trembling voice, etc. Once you are forced to get out of your comfort zone and to speak to the public on many occasions, you gradually learn how to do it. A helpful hand of friends or specialists can help you correct your mistakes.
2. SCARED OF THE PAST EXPERIENCE
Being afraid of speaking publicly can be permanent. You failed once or twice and you do not want it to repeat.
3. DOES CONTENT MATTER?
Being successful at public speaking is strictly related to the content you present and how well you understand it. Without bringing valuable content, you should not present. In general, if you are not prepared well for your presentation, you will fail or underperform. Preparations take time. Rome was not built in a day.