Acceptance
Acceptance will not be the personality accepting.
Acceptance will be Essence coming; it will be like a benediction,
a blessing, a gentle rain. The personality cannot accept. It can
surrender to the truth of the moment -- which is the same as the
stopping of rejection -- surrender and allow what is there to
be there without preference and judgment. (Diamond Heart Book
2, pg 93)

First, you realize that you are rejecting and pushing,
you see it and you don't identify with it, then there is understanding
of the rejection and cessation of the rejection. And finally a
certain essential state flows that is called "acceptance".
It feels like a blessing, a melting, a kind of vulnerability,
a kind of non-defensiveness. (Diamond Heart Book 3, pg 176-177)

Acceptance and essence
Essence is acceptance, not as approval but as a
healing agent. It is the spontaneous inner charge and discharge;
the cleansing without rejection. When the personality stops because
it sees that its activity is painful, it stops through understanding,
and not through rejection. In fact, it is not that the personality
stops and acceptance comes; they happen at the same time. The
letting go of the personality and the washing of Essence are the
same process. Your personality and Essence have the same understanding
at that moment so they operate together; personality is not rejected
but understood with compassion and love. Acceptance is actually
an aspect of Essence; it is not an activity. (Diamond Heart Book
2, pg 94)

Acceptance and rejection
Only when we allow ourselves to see the movement
of rejection and allow our understanding to unfold completely
does the simultaneous cessation of the movement of rejection and
the flow of acceptance happen. Then we regain our confidence and
trust in our organism, which is actually a trust in the truth.
Seeing and understanding the truth allows this development, because
when you completely see the workings of rejection you will feel
the suffering and see that our usual way of life doesn't work,
it causes suffering. (Diamond Heart Book 2, pg 95)