Superego
The superego is a structure that forms the apex of the psychic
structure and includes the ideals of the personality and the principles
of judgment. It is the seat of what is customarily called the
conscience. (Essence, pg 134)

From our perspective, the superego is the inner coercive agency
that stands against the expansion of awareness and inner development,
regardless of how mild or reasonable it becomes. It is a substitute,
and a cruel one, for direct perception and knowledge. Inner development
requires that, in time, there be no internal coercive agencies.
There will be, instead, inner regulation based on objective perception,
understanding, and love. (Essence, pg 137)

Superego and relationships
A good arena within which to recognize, understand, and deal
with the superego is in our relationships with others. This is
primarily because one frequently projects one’s superego
onto certain individuals, and relates to them as one does to one's
own superego. Of course, this defense mechanism of projection
helps to keep the superego unconscious, just as any defense mechanism
does. (Work on the Superego, pg 8)

So the superego which was erected to preserve and protect life,
becomes a coercive agency that leads to death, not only in the
mental, emotional, and spiritual sense; but sometimes also in
the physical sense, as in the case of psychosomatic illness and
self-destructive behavior. (Work on the Superego, pg 5)

The superego is that part of the person that maintains repression
and fights any changes to the status quo. It is one of the main
reasons why the ego defenses are needed (defending against painful
ego states and maintaining ego structures being the others); and
hence it is responsible for the presence of prejudices, overt
and covert. (Work on the Superego, pg 5)

The superego, as we have seen, is the first coercive agency that
we encounter in working on ourselves, which we find to be invested
in keeping the unconscious unconscious and which accomplishes
this by disapproving of the unconscious material. So, our approach
is to help the ego consciously defend itself against the attacks
of the superego, and hence to eliminate this important part of
the need for unconscious ego defense mechanisms. If this is done,
some awareness of feelings and sensations will bring up the part
of the unconscious disapproved of by the superego, now that the
ego is not guarding against it. (Work on the Superego, pg 6)

Whenever a person works within a certain system, the values and
prejudices of that system are automatically incorporated into
his superego, and in time become coercive agencies. Or, to put
it more graphically, the individual develops the particular system's
superego. (Work on the Superego, pg 6)

Completeness and the superego
The superego does not usually attack you because Brilliancy
is missing. Your superego doesn't know about Brilliancy, so it
attacks you about whatever sense of deficiency it finds in your
experience. Under normal circumstances, there is a misinterpretation
of the hole, or lack of Brilliancy; it is not seen as the absence
of a certain manifestation of your Being. Instead, your superego
attacks you, saying you’re too short, your nose is crooked,
you're dumb, you say things wrong, you never know which foot
to put first—that kind of thing. That is the way your superego
picks on you: It finds those little incompletenesses and attacks
you for them. But when you understand that incompleteness has
nothing to do with these things, you will have a deeper handle
on your superego. Completeness happens by confronting and completely
tolerating the incompleteness. So your superego, by attacking
you for feeling incomplete, is really preventing you from getting
closer and relaxing into your own true nature, which is complete.
(Essence of Intelligence, pg 74