I act older than my age... I'm 16 years old. Is it bad that I'm maturing faster?

I tend to think 'f**k you' when someone told me I wasn't 'acting my age'. Do what feels right for you. Don't worry about how old you are or how old you're 'acting'. Don't worry about what other people think is 'typical' for your age. YOU do what is right for YOU. I know plenty of people who drank and partied and acted like that who went on to become very successful as adults. I know many like you who didn't do much of anything later in life. The key is to be true to yourself. Don't act a certain way just because everyone else thinks you should. If going to the library is fun for you, then do it. Be yourself.