If you want to free your soul, you acknowledge that there is a spiritual order that God has designed for you. You are not the center of the universe. You are not the master of your fate. You are not the captain of your ship. There is a God, and you aren’t him.
True freedom comes when you embrace God’s overall design for the world and your place in it. This is why in the Bible you see this strong connection between God’s grace and soul-freedom.