''The teenage years are the most important years of your life''
Personally, I agree with this statement because it's when you are a teen, when you can build your future. In my opinion, when you are old, or older than when you were young, you can't enjoy fully your life, but while you are young you can study what you want, do things that you couldn't do if you are an old person, you can meet persons that they could be your friends, etc...
I strongly believe that when you are a teen, you have to make desicions that will change your life, so I think that it is a hard era for all of us. And of course, the most typical thing when you are a teen are the arguments with your parents, brothers and friends. Another typical thing are the charge of opinions and your preferences.
From my point of view, the teen year's are the most important ones, funny and hard years of a person, but they are the era that a person enjoy's the most.