Everyone has dreams. A dream is something that you keep working hard at to achieve it. Don not let anybody say you cannot do something. If you have a dream, you have to protect it. When people cannot do something themselves, they want to say you cannot do it. However, you want something keep working hard to achieve it. For example, I want to be a doctor. A doctor is a person who helps the society to prevent diseases, and live a happy life. I believe a doctor is the most crucial person to the society. However if you want to be a doctor, you have to know that being a doctor is not an easy job. If any mistake happens, you will have a big problem.