Ego Deficiency
The experience of expansion involves delight, beauty and the
sense of adventure. But sooner or later one does come upon one's
personal limitations. When an individual is experiencing expansion
in a certain realm, a part of him that feels he cannot do it,
that the expansion is too much, comes to the surface. He starts
feeling a sense of deficiency, smallness, weakness and inadequacy.
This inadequacy is rarely felt as directly related to the process
of realization itself, but manifests in some situation in the
student's life. The root of this inadequacy is the sense of
smallness and incapacity that keeps one at a certain level of
development... Essential realization puts a much greater pressure
on one's capacities, and sooner or later a sense of inadequacy
emerges. (The Pearl Beyond Price, pg 358)

As long as one takes himself to be an individual and a self based
on self-image, there is bound to be a basic sense of inadequacy
at the core of the identification. Ego inevitably contains a deep,
basic sense of, and fear of, inadequacy. This is of course why
the development of the Personal Essence ultimately exposes the
inadequacy; it is the antithesis of the arising fullness, integrity,
confidence and strength of Being. (The Pearl Beyond Price, pg
371)

Ego deficiency resolution
A major step towards resolution of the state of inadequacy is
the integration of the third of objective dimension of Essence.
The entry to this dimension occurs by confronting and understanding
the defensive nature of ego. One need not exert any effort to
focus one's attention on this aspect of ego. The defensive function
is usually at its peak when one is dealing with ego inadequacy.
The strongest and most tenacious defenses and resistances come
up to ward off the awareness of inadequacy. (The Pearl Beyond
Price, pg 380)

The hope of resolving inadequacy is in the realization of the
Citadel aspect. This implies that one is willing to live one's
life from the perspective of objective Truth, which takes into
consideration the fact of Being, without denying physical reality.
Although all students deal with ego inadequacy, only a minority
move steadily towards resolving it. This is because not many are
willing to adjust their lives according to objective Truth. This
deep surrender is rare and requires a great deal of maturity.
(The Pearl Beyond Price, pg 385)