I know exactly how you feel. My TB galloped down a hill back in November, It was the scariest thing I have ever experienced in my life. We were right beside a road when this happened and I couldn't stop her! It was like someone pulled the brakes out of my horse! Instead of getting caught up in a hedge, I lost my one of my stirrups and hit the road head first. Luckily my friend was with me, she called 911 and caught my horse. It took about a month for me to regain most of my confidence. Since then, I have taken the time to learn the one rein stop. Just in case I get into a situation like that again.
"When Nature made the Thoroughbred, she made no mistake."
"when riding a horse we borrow freedom."