This is it?

So this is it
This it what I've become
I've sheltered myself
And watched as I grew numb

I sat here and watched
Watched it all from the start
Watched myself die
Watched me fall apart

I've become this shell
All hollow inside
I'm not who I used to be
I just want to die

I can't forgive myself
Or anything that I done
why won't you leave me alone
Alone with this gun?

Leave me alone
Leave me to my cell
Leave me here to die
In my own private hell