The seeker, travelling staff in hand, sets out across a barren land, abandoning eight cups of success. Because Cups is the suit of emotions, we can assume that here success can be taken to mean success in some kind of relationship. The Moon, depicted in both her full and waning phases, indicates that the man ignored the time of gratitude (full Moon) and is heading toward a time of release (waning Moon).
The Eight of Cups key may indicate that the querent is seeking something more meaningful in his life, or may need to define “success” in a different way. Numerologically, Eight is the number of success, and we usually think in terms of financial success. However, as we all know, success comes in many guises.