random thoughts:

know just what you want， you are still a toddler
only know what you should ask, you are at most a teenager
know both what your aim is and taking action to get it. In the mean time, no hesitation and no feeling of guilty, then you are a fully grownup

I am bound by "morals/decency" or can not sacrifice my too much pride, hence action could not be taken. So I stay forever young, never a grownup.