Deficient Emptiness
In other words, deficient emptiness is nothing but space experienced
through the filter of ignorance (which is composed of images from
the past taken to define oneself, accompanied by wrong beliefs
and emotions associated with the images). This explains why when
the deficient emptiness is experienced, it transforms into space
as soon as the wrong beliefs and their accompanying emotions are
seen and understood. Of course, the ignorance has in it, connected
to it, the memories of the original childhood experiences that
led to the various self-images. The psychodynamic understanding
removes the dullness and darkness of ignorance by shedding light
on its specific content. This brings about the clarity of understanding,
which dissipates the ignorance and reveals the true nature of
the deficient emptiness, which is immaculate space. This argument
shows that deficient emptiness is nothing but space obscured by
ignorance and falsehood. (The Void, pg 137)

Deficient emptiness and personality structure
The sense of deficient emptiness depends on how vulnerable or
incomplete the personality structure is. For normal and neurotic
structures -- where there is a stable sense of identity -- the
deficiency is very much unconscious and successfully defended
against. For those with severe mental disorders, the weaknesses
or rips in their structures expose them more readily to this deficient
emptiness and the anxieties and pains accompanying it or in reaction
to it. (The Void, pg 128)

Deficient emptiness of holes
For each lost aspect of Being, a different form of deficient
emptiness results. These different forms can be seen as the various
holes in one's being or in one's personality. Each hole is a deficient
emptiness in which the feeling of the deficiency manifests as
an affect of the lack of a specific quality... We see that the
experience of deficient emptiness -- which is the interface of
space and mental content -- is of paramount importance, not only
for understanding mental disorders, but for the process of unfolding
of human potential. (The Void, pg 138)