I have seen a such words:when you were 8 years old you dream to be an astronaut , when you were 18 years old your dream is to became a great professor , when you were 28 years old you want to be a rich man, as you grow up ,your dream has also changed ,do you have that dream now ? I guess many people maybe become a father or mother , and you must pay for your house ,maybe your greatest dream is your family health, you must work hard for their happiness, and have no dream of before.
I know some people work hard for the dream , some people wait for opportunities ,beacause you are young so don't give it up . otherwise you will regret it .
do what you want and don't think you can get ,it is more important that it can make others get .