Willing Backwards and Evolution

In Thus Spoke Zarathustra, Will to Power and Eternal Recurrence are linked by what Nietzsche calls 'willing backwards'--willing that the Past recur eternally.  The problem with this link is that it seems to conflict with the definition of Will to Power as Self-Overcoming, and, hence, as the overcoming of ape by Human, and of Human by Super-Human.  Now, taken literally, 'willing backwards' is not equivalent to the eternal recurrence of the Past.  For, starting from the Present and proceeding into the Past, not only is the sequence of events the reverse of how it unfolded, each event itself unfolds in reverse.  So, a more accurate formulation of what he seems to mean is 'treat what has happened as if one willed it as such'.  In other words, willing backwards functions as a heuristic device for liberating the Present from the Past by assuming it, thereby empowering Future creativity, common expressed as 'If life gives you lemons, make lemonade'. So, one application is personal, e. g. Zarathustra's drama.  Another is more general--to counteract the deflation suffered by Humans upon the discovery that their origin is not divine, but animal, which, once affirmed, empowers Humans to resume the evolution towards the Super-Human.  There have been numerous interpretations of these features of Thus Spoke Zarathustra; this one is coherent and constructive.