Here's a couple of great articles from grapplearts.com

Everyone should be able to take something from these...

http://www.grapplearts.com/bjj-grappling-competition-tips.html
even if its only to know everyone else feels nervous before

http://www.grapplearts.com/way_to_train_jiujitsu.html
it's written about jiu jitsu but it can apply to any aspect of your training