Feeling frustrated....advise?

This reminds me exactly of when I did my first 2'6 hunter course. I only had my horse for a month and I didn't really know him well. Anyway the first course was really complicated and my horse refused almost all the jumps and we basically got disqualified. I got in the way of myself though. My nerves got to me and I totally messed up! I feel like at shows the jumps always seem a little bigger. Most of my friends that competively show actually talk to their horses/talk to themselves and it actually makes the nerves totally go away! It works so well for me. I even know a girl that sings the Beatles to her pony haha. Good luck!!!