When doing many of these exercises, I have to say that there is something influencing so much of it. There's what I've heard referred to as the "locus of the I." The space behind my eyes in what feels like the center of my head. Because most of our sensory organs are located in this area, nearly everyone assumes this to be the command center for I/self/me. This is the space where the witness is assumed to reside. There is the witness here and the sound or object or whatever, over there. There is a subject object relationship that's taken for granted between the "inner" and "outer" world. But a newborn baby wouldn't experience it this way. There's just raw sensation with no labels or sense of "I" attached to it.
As we've been doing this work I keep having an image from the movie Men in Black show up. A tiny alien driving his robot avatar from inside its head. It's ridiculous but that seems to be how most of us assume our relationship to the world to be.
Go out into nature, maybe to your favorite cafe spot, and spend some time watching the movement of the whole. See how clouds move, trees swing, leaves wiggle, grass moves, insects, birds - all move all the time.
Then move focus to sensations and see how they too are in constant motion, thoughts come and go, sounds, colours, sensations come and go.
Notice that everything is part of one movement.
Then close your eyes and see if there is a line between you and out there, between you and life itself. If yes, where is the boundary?
No, there is no line between me and out there, between me and life itself. There is the sound of the waves crashing, the wind in the trees, a boat motor in the distance. There is the sensation of wind on "my" skin, my feet on the floor. In direct awareness, these are all only sensations occurring. Only when thoughts and assumptions are applied to them is there a "me" and "it" relationship with things "outside" of me. There is no "I" to hear "that wave" over there, there is just the sound of the wave occurring.
The boundary between me and the world is generally assumed to be at my skin. With eyes closed, in direct perception, there are only sensations occurring in space. There is no solid boundary between "inner" and "outer" worlds.
Is there an inside and an outside of Life?
No, there is no inside and outside of Life. It certainly feels like there's an inside and outside from a lifetime of conditioning, but on closer examination the "barriers" between things are seen as assumptions. To me this is much easier to recognize with eyes closed than with eyes open.
Things are different but not separate. My hand appears different from that tree but in direct perception they are seeming differences within the same unbroken picture.
There is a thought or feeling occurring "inside" of me but where is "inside" located exactly? Thoughts and feelings arise but they have no tangible reality so where could they be "inside"?
Is there something which is not included in the movement of the whole?
I don't know how to answer that exactly. From the limited perspective that "I" inhabit, no, there is nothing that is not included in the movement of the whole. From my limited perspective, in direct experience, there is a seamless whole that moves in unison. Kind of like an orchestra. However, there are people across town and across the world that are having their own direct experience that is not included in the movement of the whole from my direct experience. That's an assumption/thought though.
Is there a witness that is watching life happening from a distance?
Let me dissect this question... No, there is no separate "witness". There is no separate entity that it's all occurring to, it's all just occurring.
No, there is no separate self watching life happening from a distance. Things appear to occur within an unbroken whole. However, in direct experience there definitely does appear to be a "perspective". If I turn my head this way, I see a tree. If I turn that way I see a table. There are thoughts and feelings occurring from "my perspective" that aren't occurring to that guy over there.
Is witnessing part of the one movement too?
If I take "witnessing" as a convenience of speech rather than a separate self, a verb rather than a noun, then yes, it's part of the one movement too. "My perspective" is part of the one movement.
Is there anything which is not just happening?
No, there isn't anything which is not just happening. If a thought, label, assumption, etc. is placed on something it seems like there is a reason things are happening. But in unfiltered direct experience, it's all just happening.