Haha I remember when it was my table tennis tournament, I was quite stressed and nervous. I just couldn't understand what to do, but my teacher had told the class to do something goofy or idiotic which might make you seem eccentric to others but it will help you getting relaxed and adapting you to the situation. The best part was that I then qualified to the finals and came second. You should keep on reciting the Qur'an in your heart and have faith in Allah that He's with you all the time. It will surely help you. :)
The most unpredictable thing is that when people can change their faces. Friends can turn to enemies and even enemies can become our best friends. The person who admires you the most today and claims to love you no matter what might be the one who'll be the reason behind your destruction tomorrow. The poor person with whom you misbehaved today might be the richest person in the future who might help you in the hour of need. People's attitudes can never be predicted.
If you saw my handwriting then your reaction would be like this: - Reads the first letter: *Screams* "What the hell is that???" - Reads the whole word: *starts crying out loudly* "Which language is that???" - Reads the whole sentence: *takes out a gun and shoots himself* Dead................................................................