Do not let yourself seek the excuses that will stop you from finding success. Success is small steps and takes time and effort. The academy is all about comparing yourself to your yesterday self. You need to work harder if you are not better today than yesterday. Everyone is afraid as there is always someone better; courage is when you find greater strength and desire than your excuses and put in the time and effort to improve.
Working always with like age and skilled individuals is different from your competition. You compete against one person, and that is yourself.
The athlete's skill level and age differ from your challenge. You are challenged by your inability to find the courage to put in the effort and time to improve. No one starts being the best at any sport without time and effort. Each session you attend will make you better. All athletes begin at different skill levels. They are all learning to compete. The hardest lesson to learn is to compare to no one but your yesterday self.