That little voice inside our head is really not our consciousness. Turn off that little voice inside your head, the voice of reason, that tries to rationalize things. Its actually the passive observer that is tied with our human ego, a condition that comes with as soon as we are born. It is the voice of the ego self and not a part of who we truly are. If you want the deeper truth then you must separate the ego self from your true self and you can do it through meditation (as well as prayers if you do pray) little by little gaining confidence and having control over this ego self. You can do it.
Very interesting. I am a Christian, but I think I understand what you are saying.
As a Christian I would describe it in different terms.
The voice you call the voice of rationalization I call the soul. The soul is the ego. It's what we feel like doing and it gets us in trouble many times. You're right. We don't want to listen to that voice because it pleases our flesh, but not our essence, or who we really are.
And we must go deeper, through meditation or prayer.
I understand what you're saying. I just had to make it understandable from my own POW. Having done that I now understand your post in its totality.