How can I run a 4x400 relay race without stoping early?

I have a Track meet this Monday and im really really nervous. Can someone help me?!

Athletic competitions are won or lost in the training period, not the race/game. If you have put the work into the training, you will do fine in the race. If you haven't, you'll learn what it takes to win. The best you can do right now is work on your confidence. Winning at anything begins with a belief.