Some people might think being realistic is better than having ambitious dreams. In my opinion, however, having ambitious is better since it makes people do more enthusiastically and feel happy when they have huge goal in their life.
First of all, people who have a great dream can do more hard when they do things even if the dream is impossible to achieve. Suppose that people work without dreams and just do their work for money or something else. Would it be possible to work actively? The answer will be “No”. In this sense having daring dreams is important when they work. For example, when I was preparing university, I was aim at university that required high score at korean SAT. I really studied hard because I have a end to go the good university. As a result, I could not go that university, however, I went a good university since I studied, having a goal.
Second, having ambition makes people happy while they do their work. Happiness cannot be in a second place. Without happiness cannot achieve anything. If you have objective you will live more glad even if it is hard to accomplish one’s own goal. For instance, there is Jane who has purpose to her work while Tom, who are just accept his realistic life lives just it goes. Jane works very efficient, so she got a promotion quickly than others. However, Tom cannot do work effective because he does have any object of his life. He just does his works passive.
To sum up, I agree with that having ambitious aim helps people to be succeed. It makes people do more hard and happy.