1. Take a leak
Sounds funny right, but it makes a big difference in reducing stress. Peeing should be the last thing to worry about during your presentation.
2. Practice pranayam

Train your mind through breathing exercises to calm your nerves. Practice slow rhythmic breathing to get over your stage fright. As you inhale, tell yourself to calm down and as you exhale tell your mind to relax and connect with those feelings.
3. Eat and drink wisely

Drinking coffee or tea might increase your anxiety level, it is advisable to have plenty of water and lighter foods instead.
4. Do your homework
You lose confidence or feel jittery if you don’t have thorough knowledge about the subject. The better you know your topic, the more comfortable you feel when you face the audience and less worried about fumbling.
5. Imagine the worst
Simply imagine the worst of things that can go wrong and try visualising them. If you only plan and hope for the best then you might not be able to fight back the potential bumps. Thinking about the worst can give you confidence to handle the worst.
6. Channel your fear

Try and accept your fears and work towards them. The fear will pass more quickly if you don’t focus on suppressing it. Also try to encourage yourself or listen to an inspiring speech or upbeat music, just as you would before an intense workout.
7. Be good to yourself

Think positive, encourage self-talk and stay away from anything that can fuel your fear. Talking to yourself in front of the mirror can help to boost your confidence and calm your nerves.