I’ve had performance anxiety and real anxiety since I was a small child. Of course, I also wanted to be a violinist, so dealing with it was necessary. I’m talking total complete meltdowns on stage, forgetting my music, vomiting after performances, hyperventilating. And it translated to horse-showing.
Things that did not help: meditation, visualization, breathing exercises.
Things that did help: exposure therapy (playing in front of people all the time), and chemicals. My first chemical of choice was beta blockers - they did not help me at that time. I self-medicated with alcohol. Lowering my inhibitions made me less afraid of making a mistake, and I learned that I would survive mistakes - this was CRUCIAL. All of the self-help and breathing exercises will not work if your brain is in survival mode and thinks you will die. Psychological reactions lead to physiological overreactions. You need to override that.
Alcohol is NOT a good long-term solution, but it helped me discover that I needed to short-circuit my anxiety-brain somehow. So I kept having a drink while I played and eventually I could play in front of thousands of people stone-cold sober and enjoy every minute.
Drinking and horses do not mix. My trainer and I made an exposure therapy plan and combined it with 0.5mg of Klonopin (cut into the quarters) that I obtained via rX from my doctor. First step was going and schooling at the show. Then entering a really easy class. Then entering an easy class and a hard class. Then entering two hard classes, always with a test reader. And then doing tests from memory. All the time, I’d take my little teeny 1/4 of a Klonopin tab every two hours. I was never high, but I was relaxed and clear-headed. I could comprehend what went wrong and go in the ring without freezing. I had my brain back.
And by golly it worked. Two years and 8 shows later, I am as excited to go to a horse show as I was to play giant festivals. This was impossible 10 years ago. A plan, a supportive teammate (my trainer), and a little chemistry go a long way.