I have suggested the image of a square soap bubble to help in understanding how one can appear to be discrete, autonomous, separate, and yet be part of all that exists, unified with world and all that happens within it. I find it helpful. The bubble is discrete, separate, has a distinct identity, yet at the same time, no part of it has an independent existence.
Here is Maturana on a similar theme:
Systems as composite entities have a dual existence, namely, they exist as singularities that operate as simple unities in the domain in which they arise as totalities, and at the same time they exist as composite entities in the domain of the operation of their components. The relation between these two domains is not causal; these two domains do not intersect, nor do the phenomena which pertain to one occur in the other” (2002, Cybernetics & Human Knowing, 9:5–34)