No Self
The state of no self is actually a pure manifestation of inner
spacious reality, Being in its openness, we experience it as empty
space, immaculate and pure, light and clean, empty of everything
structured by the mind. However the self reacts to the sense of
no self in many ways -- as a loss, as a deficiency, and so on,
plus the associations, memories, and feelings that go with these
interpretations. All this psychic content pervades the inner spaciousness
so that we lose sight of its lightness, purity, immaculateness,
and freedom. Instead, we feel it as deficient emptiness, dull
and flat, heavy and dark. Only when we allow this emptiness to
be, without judgment or rejection, without reaction or opinion,
does it shed its obscurations and reveal its inherent truth: the
state of no self, the freedom and openness of our Being. (The
Point of Existence, pg 337)

There is consciousness and a kind of emptiness, a void that has
no sense of self and no need for a sense of self. The step after
that is the loss of consciousness of no-self, and when that consciousness
is gone, there is no consciousness of self, or no-self and no
knowing that there is no consciousness of self or no-self. This
is the absence of mind, consciousness, and sensation. When that
happens, it is then possible to be truly spontaneous because there
is no self there to reflect on. If you reflect on yourself in
this state, the only thing that happens is that you realize your
head is turned around and that you are looking outside. There
is nothing else to look into; you can only look outward. The main
barrier to all these transitions is the belief that you are the
person that is connected to the body. You’re taking what
we call the shell (because it functions as a defensive shell)
to be you. Identifying with the shell brings the terror that you
are going to lose the sense of being a person. But what you actually
are is not a person; you are a window to the universe. (Diamond
Heart Book 4, pg 131)