How to qualify for a big golf tournament?

I am trying to qualify for a huge golf tournament over the weekend, or at least it is big too me. I have practiced and my game is good but i just need help controlling the mental aspect. If i have a bad hole, how to put it behind me etc. Any help would be appreciated!!

its just something that you get over over time. two years ago i can remember slamming clubs after a bad hole and just last year my driver finally broke from the abuse. this year though ive learned to just let it go and not worry about a bad hole. one because theres still a lot of golf to be played in the round and you can make up for the bad hole and, two because theres really nothing on the line unless youre maybe trying out for something. there is no money in youth golf. just enjoy the game