Correção do texto "The world of teens"

First topic that I would like to talk is related to the development of personalities and thoughts with the increasing of age.
When we were kids (and when I say kids I mean 2,3 years old) we thought that everything was a piece of cake and beautiful… Therefore, we were so innocent that we didn’t pay attention to the hard truths that surrounded us. They say the Santa Clause exists we believe, they also say that the Easter Bunny brings us almonds and we believe… Nevertheless as innocents we were we didn’t have worries in our minds so we were always happy no matter what…
As soon as we grow up our thoughts start changing. When we are almost teenagers (pre-teens) worries start coming in our minds. We become look to girls in a different way. Consequently we take care of what we dress in order to get some girls.
Then when we are really teens, the thought we had when we were pre-teens become more intense. Finally, we are going to be adults one day and in my point of view our minds will also change… I just don’t now in what way.
2º Topic: our lives have steps which I referred to previous, so we need to be ourselves in all of them, so that we can be happy. We mustn’t change since someone doesn’t like, we just should change if we think we need to!
As we are all different and I can identify 10 types of teens: Beauty Queens, Flirts, Dramatics, jokers, Teacher’s Pets, emos, Health Nuts, Perfectionists and Gossips. We are all different. However, if we like that we must keep it that way.