Your whole mind is supposed to be everywhere.
The mind inside your body seems to be your conscious mind. The mind outside your body seems to be your unconscious mind.
While what is within your body seems to be different and separate from what is outside your body, you will see yourself as being the limits of your conscious self. Parts of you which are unconscious will be seen as outside of you.
Guilt which you put into your unconscious, so that your conscious mind can pretend to be innocent, will come up as seeming "events" in the outer world which come to teach you lessons. You will see them as attacks on your identity, at least at first, depending on your willingness to use them differently.
When what is within you is the same as what is outside of you, and when there is no further need for a separation to keep the two apart, the body will have no purpose and will disappear.
When what is within you is seen as also being within others, whereby what is in both of you is the same Christ mind, the same Self, your whole mind will be experienced as everywhere. That's because, like God, you are omnipresent.
The body was made only to create a sense of separation in the mind, a split between what hides within it and what hides outside of it. Its only purpose was to maintain an illusion of division so strong that it suggests the limits of your conscious self is the confines of the body.
You built a wall around the conscious self which, through a condensing of that idea, formed the illusion of bodies. Bodies are a barrier between what has been retained - the little innocent self - versus what has been rejected - the larger body of unconscious guilt which is disassociated from and appears to comprise "other people", i.e. "not self".
What is happening outside of the body is just a drama being orchestrated and run by the unconscious mind. Your unconscious mind. Events which happen in it represent the content of your own mind coming up into awareness to be reconsidered for forgiveness.
Forgiveness must entail a repair of the inner joining with the outer, of the separate embodied self rejoining with and beyond the embodied selves of others. What is in you is in them. What you are is what they are. You are one.
Joining of minds, which is miraculous, causes the body to be healed, because the body temporarily disappears. Its shift into invisibility, in light of the truth of oneness, heals it of its use as a device for separation.
Attempting to anchor self more heavily into the body and to tie the self to the body, simply makes the body more real and reinforces the separation between yourself and yourself. Such is the purpose of sickness which defends against unity by reinforcing separation, i.e. reinforcing the reality of the body as a wall that comes between you and your brother.
Your brother IS yourself. Those "others", those "not me"'s outside of you, ARE you. They are parts of the split mind of the sonship. You are to be reunited with them and share with them and join with them. This overlooks the body and it becomes meaningless and non-existent. It must disappear as inner and outer, self and not-self, become One.
In oneness there can be no separations.
You are everywhere. You are the whole sonship. You are the One Omnipresent Son of God.