foolMoon
I always equated this card with the figure of Adam, and the card in the RWS seems to support this. While Adam was in the Garden of Eden at Tiphareth, everything was balanced and in line with the Will of God. However, once he ate of the fruit of the Tree of Knowledge he gained the creative powers of gods (creating new life) but lacked the godly "engine." As a direct result of this the carefree abundance of the Garden was denied to him and so he had to work for his subsistence from the very earth that spawned his own life.
Seen in this light, the title of failure may be fitting, as not only does Adam toil but the (literal) fruits of his efforts are poor and meagre. All of the four Sevens taken together show different aspects of the "hard work" of being alive. Force becomes aggression, thought becomes obsession, emotion becomes masturbatory self-indulgence and abundance becomes hard and cold.
I sense strong whiff of Chritianity