10 minute break in class on N. and professor Christine Downing just summarized one of the points of commonality between Freud and N.
Religion and metaphysics are illusions created by the deep human longing to fulfill 3 unfillable needs:
1) that the world be ordered.
2) being good and being happy are linked.
3) death is not the final word.
In FFX, Yevon gives #1, but it's definitely an illusion. The Calm is the result of Summoners' noble sacrifice, which is actually in vain. And death ISN'T the final word, but it turns out that Spira is much worse off because death dominates so much.