A lot is said about fear. Less is said about guilt. Even less is said about sin. And less still is said about separation.
It is hard enough to get people to talk about unconscious guilt, and once they do they somewhat fixate on it as being 'the real problem'. But the only way it's even possible to believe in guilt is if you believe in sin, which came before guilt. Behind unconscious guilt there is unconscious sin.
Sin also isn't the end of the road, or rather the start of it, because the only way you can believe in sin is if you believe you are separate from God. The tiny mad idea had to happen before sin could happen, otherwise sin would have nothing to 'make real'.
Sin says that the separation has actually happened and gives 'reality' to that sense of separation, stating that it has happened so much that it is irreversible. It is only after sin has established that separation produced "real consequences", which are irreversible/un-healable, that you even get to the affirmation of guilt.
By being guilty you are acknowledging that sin has happened, and therefore YOU were the one who made it happen, and so you are the guilty one. You are responsible for all of the consequences that sin indicates has occurred. And so you are guilty. And it's not until after you accept guilt into your mind that you can even become afraid of punishment.
Fear of punishment enters into it by you believing you are the one who sinned, you are guilty of it, and because of this there is going to be a punishment. In other words, sin has a price - God has been lost - and you are the one who did it, so you are responsible for 'paying' for this loss. Sin established what you really did happened, guilt pointed the finger at you, and fear results because YOU really want to claim responsibility for having successfully achieved the separation. You will have to pay for being guilty because sin and guilt DEMAND punishment. So now you're afraid of punishment because you believe you're guilty.
And we could even say that fear isn't the end of the road either. Fear comes from believing you are guilty, and fear governs most of what happens in the world. The physical world was a denial-projection mechanism made to COVER UP unconscious guilt, to make it palatable. So now we are in a world of FEAR. And fear says that punishment is coming. Fear therefore BRINGS that punishment. The punishment is death. You may be afraid of death but nevertheless fear leads to death. And so the tiny mad idea leads to death through all of these stages.
So yes it's important to undo our belief in death. It's important to undo all fear. And it's also important to undo the unconscious guilt with the help of Holy Spirit. But it's ALSO important to undo the belief in sin, otherwise 'what has happened' cannot be undone. Just undoing the idea that we're guilty for what happened, may allow us to see a guiltless world, but it will still be a world where things happen and go wrong. Things going wrong is sin. Things happening is sin. If a world is happening, it is proving that separation has happened.
So unconscious sin has to be undone, which entails the further healing of the separation, and the reversal of the laws of the physical world - the laws of 'whats happened'. This is where cause and effect are reversed back to their proper order. This could perhaps be called the level of our higher selves, or of our 'individual' son self as part of the sonship. And this still isn't the end of it. Having mastery over the world and able to change the world still allows the world to exist.
The final undoing is the undoing of the IDEA of separation in its entirety, in which there is a total oneness of the sonship as the ONE son, on the level of Christ. And it's here that all separation is healed and the entire universe disappears. This is the idea of 'separation' being undone. Sin is undone, proving the separation has not happened, and demonstrating that it has had no effects. And so without sin there is no proof of separation. But it's still an idea. And now this idea must be let go and God takes the final step to return us to total union - awakening into Heaven.