After studying psychology formally even to the point
of being accepted by the clinical program, and
graduating with honors in psych and philosophy of ethics,
it all simply boils down to insanity being the rejection of
Christian ethics.
Of course, I mean this in the mystical sense too,
in that its not about institutional Christian-ism,
but genuine honesty and good-will as is evidenced in
the parable of the good Samaritan.
Mostly insanity that manifests outside of intense
abuse originates with one single act of poor judgement
which then compounds as the person refuses to
acknowledge their own error. Often that error
is based on cowardice and fear of death.
But as more lies are needed to cover up the first
lie, so the lies form a 'complex' which snowballs
to the point that the person loses sight of what
is true and what is not.
This is because the easiest way to convince
others that a lie is true, is to live and act
as if it were true. So the shadow overpowers
the ego, and the person performs terrible deeds
after which they honestly feel they were
'not themselves' or reckon 'i do not know what
came over me'.
The only way out is deep introspection all the
way back as to what the underlying lie(s)
behind the psychosis are.
Also look at the character of Loki in the Norse mythos.
Of course external abuse compounds these problems,
often in cycles of punishment-crime vicious circles.
The way out is to allow oneself to feel radical amounts
of sadness - allow oneself to have a nervous breakdown,
and then rebuild the psyche on more honest grounds.
Also one has to allow that abuse can be karma from
past lives, and this allows the ego to not hold
grudges for abuse that seemed unwarranted.
Recalling past lives is a beautiful experience;
the karmic reasons, notwithstanding.