Story of my life

Today I went to practice and did everything I was told to do. After practice I sat down on the dojangs floor and stared at my knees because of how much they hurt. At that moment my master walks up to me and asks if everything is okay. And of course me being me just says I am fine although I was in a lot of pain. I am sure my master noticed something was wrong with me because he told me that everyone must experience pain to get to the level they desire. But he also said that everyone has a limit .And that breaks are necessary for improvement.He then said "Miriam its okay to take breaks." Then I got up and decided to practice one more hour before going home.