Doing exercises –
Do visualizations where you go through the different stages of your presentation. Imagine you’re displaying confidence, calmness, and authority. Visualize your audience captivated by your presentation, nodding in agreement, and applauding you.
Do breathing exercises by inhaling through your nose, holding 5 seconds, exhaling through your mouth, and waiting 5 seconds, repeating as needed.
Do some physical activity the day before your presentation such as running or swimming. On the day of the presentation, take a brisk walk or climb some stairs. Loosen up tense muscles in your shoulders, arms and legs. Yawn to relax your facial muscles.
Shifting perspectives –
Don’t focus on past failures; concentrate on things you do well.
Identify your negative predictions and find out if there is any basis to them. Change your prediction if there’s no reason for them. If there is a basis for them, work on the skills needed to improve those areas.
Focus your attention on your audience. Make eye contact with, smile at, and speak directly to a few members of the audience.
Changing behavior –
Find a way to control the room setup or presentation aids and adjust your movements and speech accordingly.
Being yourself –
Acknowledge the fact that you’re nervous. Don’t pretend that you’re more confident or knowledgeable than you are.
Don’t be afraid to convey your own personality or to put across some of your own points of view.