If you ask me this question in my childhood, I would say:" I want to be a teacher, a doctor, an actress....and so on..." . But now if you ask me this question, I will tell you I have three dreams, to be a respected person, life very colorful and beatific, and have a great job....
First, I want to be a respected person. I know many people want to be a famous person because they think maybe many people will adore and respected them, but in my opinion, I want to be an ordinary and not ordinary person. The reason why I want to be an ordinary because I want to be a low-pitched person, and the reason why I want not to be an ordinary because I want to do things very high-key. I also know if you want to be a respected person first you must respect the other people and respect yourself. 
Second, I want my life will colorful and beatific. I think life not noly work hard, but also we must know how to enjoy your life. Enjoy life doesn't waste money, we should use many to do some significative things. For instance, we can contribute our money to help the poor and homeless children, we can travel to somewhere to see the nature scene, we can buy book or collect your interested things to enrich our life, we also can have time to play with your family....
Third, I want to have a great job. This job must to be interested because I can do every things very exciting. That job must can give me more colorful and feeling. 
Maybe you will think my dream is so nice that maybe it will be not come true....but I want to try my best to come true my dream. I hope my life in the future will be successful. I know everyone has own dream, so I hope your dream also comes true!!!!