Are you worried about the future?

I’m eighteen years old, it’s assumed I'm more or less a responsible person, I know what I want be in a near future and therefore my live should be completely organized. Well, I don’t like the term “average person” due to that I think is stupid and a waste of time be always thinking about the future, basically because we’re in the present. I’m not a serious person although I can seems it, I’m young and I’m more worried about enjoying the present than thinking in future questions. I don’t know what will be my job or if I will form a family but I believe that present is the secret to be happy in the future. Maybe I’m wrong but anyway people say that we learn of our mistakes.