when people change? or they think that they change?

Now, I am in Los Mochis, I prefer to tell this a "recess time", I will begin in 3 week my master, but the topic of this post is when people change.

The other I was talking with a group of friends, and some began to talk a lot of stupid stuff, I think " she is not the girl that I Know, what happens with her?", lets begin to explain my point. When you are in high school, you have a group, very goods friens, they are you friends because you like to spend time with them, and have the trust to tell your secrets and problems, that is a friend and that meaning is forever.

The problem is when you go outside of your hometown and see diferent cultures, diferent king of people, depends of this you grow up or you become a stupid person, Sometimes you forgot who you are?, and is worse when all your friends forgot who are they?, is weird.

Please when you think that you are better than the other people, you have to look inside you and see who you are, don´t make mistakes, think before talk.