From the perspective of a person waking up, there is a falling away of a sense of individuality and a “waking” to our cosmic or universal Self. Hence it is called Self Realization or Cosmic Consciousness. This is not just a recognition or an experience but a shift in being, a shift in where we experience the world from.
But for a person, there is nothing they can do to create this event. They can do practices to help smooth the process and prepare the ground. But awakening is a surrender, a letting go, a non-doing. Sometimes it happens with a catalyst, like the presence of someone awake they resonate with. And sometimes, it just happens out of the blue.
This is because what is triggering the awakening is much deeper. Deeper even than cosmic Self.
From the later Unity perspective, all comes to be seen as mySelf. The mechanics of consciousness and awakening become much more clear as they are intimate to us. We come to recognize consciousness as self-aware both globally and at every point within itself. But still the trigger of awakening is not seen. Perhaps it is called grace.
In Brahman, the perspective changes again. Now we are beyond consciousness, existence and all we were before. And yet, Brahman is inclusive of all prior stages. Where Unity gradually comes to see all as Self, Brahman knows what is non-Self. We could say non-Self is Self that has not yet woken up to itself. The dark side that is silence alone, unlit by self-knowing, the light of awareness.
Thus in the process of Brahman knowing itself it is said to devour the non-Self. The person back at the beginning? They know this as awakening.
Thus we discover it is Brahman knowing itself that is what a person knows as awakening.