It's better not to think deeply about this kind of thing. You are young and innocent at all. Don't force such things as maturity. Experienced more things, will naturally grow slowly. One day, when you look back on your journey, you will find that you have gradually matured. The main purpose of the university is not to let you learn knowledge, but to give you a good atmosphere, so that you can cultivate your sentiment and slowly move towards society. Don't worry,things can only get better.