It is wired for physical protection though, not emotional but, the brain hijacks the circuitry and extends the body out into the ego and says, we are the same, protect the ego as if it is real.

I liked this. It reminded me a quote from the movie After earth: "danger is real fear is a choice". If our brain is wired only for physical protection probably there was an event in the life of each of us that triggered this brain hijack. It would be useful to identify and deal with it like you are saying, writing about it to let it go.