The little girl and her imagination !!

I used to be always the top in my school, but this year I start to see that it was just my imagination, I wasn't good at all. I was just a little girl who sees herself as the best and that makes her feel that she can't be better, because if for just a second she would look around her, she will realize that she's nothing and everybody is better than her, because they work hard to make their dreams come true. So, this girl will do the same, to be what she expects from herself to be in the future :)

[Your basics are good.  Put spaces after a period and comma.  A person may realize that they are not quite as good as they thought, but that DOESN'T mean they are nothing because of that.]