The final leap into realizing - or discovering, noticing - what we are is a momentous one. It is a shift more radical than anything that has gone before, or that is at least often the experience of it. Up until then, there has always been a sense of a separate I, however (apparently) subtle. And now, that one is gone. There is just the field of awareness and its content, where the content is revealed as nothing other than awareness itself, and with no sense of a center or a separate I anywhere.
The perceptual center, located in this human individual, is still there, but it is no longer a center for a sense of a separate I. The perceptual center just arises within the field of content, along with anything else coming and going.
So it is no wonder that most haven't gone there yet, including most Jungians, or Process Workers, or even mystics. They may go to the threshold of it, where the sense of a separate I appears very transparent, subtle, vague, minuscule in the ocean of everything as God, Spirit, or awakeness and form.
But to take the final leap would mean to question our final and core identity, as an ultimately separate self, a separate I that may be "one with" everything and God, but is still a separate I. It means to question, and to thoroughly examine - leaving no stone unturned - the belief in the idea of a separate I.