碇 シンジン

Coming close to a philosophy that I have and that is that you are not who you were years ago (or even months or days ago if you prefer). A separate soul from the one that used your body as a host a few years back. 

Interesting observation. The similarities feel like they exist but when I look closely it is as if they were there only because I put them there in the first place or want them to be there for some reason. It is not like they were there by default.

My line of thinking suggests that they were there from the beginning but was there really anything in there at the  beginning. As we are products of our own actions and choices before the choice the choice was not present it is only present after and while it has been done. 

It is baked into yourself quickly after that usually without any major leads on how you can trace yourself back to it effectively. That might be the point when something new entirely is born from yourself. Adapting into the changing environment changes everything including the core of your being.

Can you really identify as something you were before if that something is fundamentally different compared to your current predicament. Even if some parts are similar the way they adapt you into situations is ever changing which in turn undermines the said similarity to a point where it is not really relevant anymore.