If we follow the guidance of the Spirit we can reach Godhood, if we do not we may not. This is the essence of the idea of the Fall of man. In the Garden of Eden man was following the track of the Spirit evolving toward Godhood. When he stopped following the Spirit, and allowed the Soul-body to dominate, then he fell from Grace into sin.
When man is centered on his Soul, ie. his ego or psyche, he acts differently than when he is centered on the Spirit. When centered only on the ego-body-soul, evolution may stop, or move sideways, or move back from the direction of the Spirit. Humanity can even be destroyed.
When we stop the guidance of evolution by the Spirit and follow instead the ego-only-soul, then as Genesis says, “The earth will bring forth thorns and thistles.” And women “shall bring forth children with pain.” This was symbolized by Adam and Eve being turned out of Eden.
The way of return is not easy or simple. This present world will pass away. New species will rise, as Noah and his sons survived the flood.