Please write an argumentative essay of not less than 800 words.
On the way to realize your dream, there are inevitably difficulties and obstacles. For these difficulties, you should have confidence in yourself, keep trying and challenging, and tell yourself, "I can do it!" " And step by step to a higher place, don't give up your dreams, and keep trying to cheer yourself up, make yourself full of motivation and move forward with your dreams. Deng Yaping, our Olympic champion, was determined to be an excellent athlete when he was a child because his father was a sports coach. However, her height is short and her hands and feet are short, which completely does not meet the requirements of the sports school, and the door of the sports school has not been opened to her. So, the young Deng Yaping learned table tennis from her father, who stipulated that she must serve and catch the ball at 100 every day after physical training class. Although Deng Yaping is only seven or eight years old, in order to make her skills more skilled and her basic skills more solid, she tied sandbags on her legs and changed the "wooden sign" into an iron sign. For such hard training, she never gave up, and kept telling herself, "I can" and persistently challenged to hit the ball faster and more accurately. Hard work always pays off. Due to Deng Yaping's persistence, at the age of 10, she won the team and singles championships in the national youth table tennis competition, and later won the championships repeatedly in the Olympic Games, leaving a brilliant mark on her sports career. Deng Yaping watered the seedlings of her dreams with her own sweat and made them come true.