Watch and see how they ride their horse. Every movements, attitude, directions, interaction between horse and rider are important things you should notice. If you want to be a real horse rider, being humble is an absolute requirement. Do not miss any chance to hear advices and tips from the professionals.
Though you could not hear much (because of the noise of the horse), you could watch their techniques, their attitude, and their communication with the horse. You need to gain a realistic perspective of yourself, your goals and how to achieve them.
Focus on the bigger goal, the improvement of yourself, achieving the highest relationship with your horse.