创建一个简短的故事，以描述一个人在生活中如何克服困难。
John是一位家喻户晓的医生，但他却害怕狗。有一天，John经过一个停车场时，一个小狗突然从车底下跑了出来，他吓得浑身发抖。这让John意识到他需要克服这个恐惧，于是他开始养一条小狗，并逐渐摆脱了他对狗的恐惧。
John, a well-known doctor, had a fear of dogs. One day, while passing through a parking lot, a small dog suddenly ran out from under a car, causing him to shake with fear. This incident made John realize that he needed to overcome his fear. So, he decided to adopt a small dog and gradually, he overcame his fear of dogs with the help of his new furry friend.