Knowing too much things may not be good

Sigh... though my A-level is over, i dun feel happy at all. Ironically, i feel sad. Why? Because i know too much things already.
I'm quite free recently, so i met up with some friends. I juz knew many things abt txy and i was totally shocked to know these facts. Actually, i would realli hope that i dun know all these things. My impression of many other ppl in my mind has changed, mostly from good to bad. Well, i still need to do more "verifications" to confirm all these. Some of them even concern ruiying. I am really unsure if i shld do something abt that. Not only it concerns ruiying, it also concerns my friendship with some of my friends. I know that i'm leaving for HK soon, but i simply can't put everything aside. I really want to talk to some ppl abt that, but i can't find them. Trouble, trouble, trouble....
Not only this, i am hoping to do something and it seems that i'm not allowed and i'm not chosen. I'm really at my life's "low tide"(translate directly frm chinese). I can't think of any solution and it seems that everyone is so happy, leading their lives. I also hope to, but i can't find anything to lead a happy life. Maybe i'm like Monkey God, i need to encounter 81 difficulties to succeed. Haha, not funny.....