Is there anything I can do so that I don't get nervous before a 100m race?

I have the 100m today at club athletics and Im already nervous and its 2 hours before I run please help me I am really nervous or:I have the 100m toda

I have the 100m today at club athletics and I'm already nervous and it's 2 hours before I run please help me I am really nervous

or:I have the 100m today at club athletics and I'm already nervous and it's 2 hours before I run please help me I am really nervous

or:Just try and think about something else and do something that keeps you busy or you could think about how great you are going to do!!

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