It's very easy to believe that we are here in the dream, as a body, as an ego, trying to get to Heaven, which is far off in the distance, and we seem not to be there yet.
But this is only the perspective we've become accustomed to. It's how the ego sees things. It believes that its illusions have actually taken us out of heaven and not merely denied who we are but has literally changed who we are into a different kind of person.
The ego suggests that the light that we once were has been corrupted and blotted out, that it sinned, and it then transformed into a darkened self. That somehow we "fell" from Heaven and became guilty and riddled with problems.
But this is, and always has been, a lie. It's a cover-up. Because the fact is, that we have still not left heaven at all. As the Course says, we are "at home in God yet dreaming of exile." So in terms of where are located, we are NOT actually located outside of Heaven in some world we made, we're still in heaven but have surrounded ourselves with a strange hallucination.
From this side of what appears to be separation, it seems as if we never were in Heaven and that we are lacking Heaven's qualities, therefore we need to gain it or build up to it or find it or add it to ourselves. But there is a fundamental lie behind this, that we are lacking it, and that it is not already in us.
The biggest ego lie of all is the suggestion that we are not still in heaven or still as God created us. Or that somehow who we were before separation has been undone and removed and replaced with something else. It hasn't been replaced, not at all.
In fact, the self that we really are, our soul/spirit, is still very much exactly the same as it has always been, exactly as God intended it, is completely awake and alive and unharmed, totally innocent and holy, having never sinned and still simply going about its business.
"You are a perfect creation."
"There is nothing about me that you cannot attain. I have nothing that does not come from God. The difference between us now is that I have nothing else. This leaves me in a state which is only potential in you."
You also have come from God and are still coming from God, it's just that you've also tried to "add" a bunch of other stuff to change yourself in ways that are impossible, which temporarily BLOCKS awareness that you are STILL as God created you underneath those blocks.
So it's not that you "actually" left home and turned into a murderer, you actually are still at home now, and there's simply some layers of denial and pretense that are covering it up to make it SEEM like it's not there already. Uncovering and removing those layers of hiding will REVEAL what is already present, which is your holy self which has not changed at all.