Looking at my physical reality I can see that I'm always physically in the center of my self (self = me and everything physically around me), so being self centered in my mind is in alignment with my physical reality.
My mind is a hard drive and CPU that stores and processes my version of the world. How I define my self reflects the MATTER in my physical reality. What I say about "others" is like looking in a mirror and judging my reflection. When I look in my mirror everything I see looks beautiful and perfect, and this perception is reflected in my physical experience. What I see is what I get (WISIWIG), my life is a holographic reflection of my mind, and I am the perfect reflection of perfection.
Being self aware is not a group thing. Every tree has a root underground that never sees sunshine, and the tree needs the root to survive. The view from the top of the tree is wide and expansive, while the view standing under the tree is limited. The bird who sees the tree from all sides, knows, accepts, and enjoys its perfection as a whole.
Being one is singular, to say I'm "one with" something else, that's two.