羊皮卷：坚持不懈，直到成功－3

 　　I will remember the ancient law of averages and I will bend it to my good. I will persist with knowledge that each failure to sell will increase my chance for success at the next attempt. Each nay I hear will bring me closer to the sound of yea. Each frown I meet only prepares me for the smile to come. Each misfortune I encounter will carry in it the seed of tomorrow's good luck. I must have the night to appreciate the day. I must fail often to succeed only once.