Change

 

Right now I want a word that describes the feeling you get - a cold, sick feeling deep down inside - when you know something is happening that will change you, and you don’t want it to, but you can’t stop it. And you know, for the first time, for the very first time, that there will now be a before and an after, a was and a will be. And that you will never again be quite the person you were. (Source)