It is simply about intent. If we all learn to perfect our intent, then paradise is inevitable.
Yet we are all spirit. Suppose we advance through our eight lives by beginning in the first life with 32 aspects. We integrate our 32 life experiences into one in preparation for our second life by becoming one. Again we access the second stage by splitting out 32 aspects as well. We repeat this for eight lives, typically over a hundred years.
What holds it all together is intent and expressing that intent means working toward paradise itself and that is Terra Forming Terra.