I don't think of "maturity" is always doing the right thing. I do tend to think real maturity means that you become aware that your actions mean something to others as well as to yourself. And that, ultimately, you're responsible for those actions and choices. You made the choice, you don't get to say that so-and-so made you do such-and-such. You're an adult. You had options. You did it -- for good or ill. And it didn't happen in a vacuum. You are your choices. You aren't separate from them. Losing one's youth doesn't necessarily mean that one actually matured. There are 40 year olds as immature as your average 16 year old.