I only surpass myself. A high degree of self-discipline means absolute freedom. Life is a marathon, the self-disciplined people are outstanding, and the indulgent people are out. German philosopher Kant said: "Self-discipline is freedom". If you want a high degree of freedom, you must have a high degree of self-discipline. Only when a person is absolutely self-disciplined can he be relatively free. Kant has been practicing this theory all his life.