Hello Kailaurius,
Yes, it has been very difficult for me to comprehend. I have read Wheels of Life on your website several times, but I am still confused about a few of the details that interest me.
Let me see if I understand this part correctly, and please correct me if I'm incorrect on some or all parts. Multiple individual expressions or personalities of the Higher Self exist throughout the Physical, Astral, and Mental planes all at the same time from the perspective of the Higher Self.
Yes - but you see to understand this we must get away from this concept of "time" - it does not exist. Humans think they experience time because they have created "clocks" etc and a calendrical system based upon Earth relative to the Earth and Sun. But if Earth was a couple of degrees out of its current orbit around the Sun, and the Moon was slightly further away for example, the Gregorian calendar and human concept of "time" would be different, but yet nothing has really changed. Time is experienced, not measured due to the space-time continuum of the physical Universe.
So everything in the Universe, including all incarnation, take place in the Present Moment of the Eternal Now. There is no other moment.
The goal of each personality is to return to the Higher Self with it's packaged experience by experiencing, learning, and progressing through the Physical, Astral, and Mental Planes. When the Higher Self has gained enough packaged experiences from all of it's personalities It moves on as a single Identity with no more personalities or multiple expressions of Itself through the Spiritual plane where It continues to progress It's way back to Source.
Absolutely correct.
Our Higher Self is immensely powerful. Each incarnation experiences a tiny fraction of the power of the Higher Self. The Higher Self goes on to be a Co-Creator of the Universe which is a huge responsibility, that is why the training course is so tough.
Here are a few questions that I have. Does each and every single personality of the Higher Self have to achieve perfection or become God realized before returning to it's true Identity?
No - not at all. In fact it is likely that only one incarnation - the one that becomes the Individuality of the Higher Self - achieves God-realisation while in a physical body - the highest state a human can reach - otherwise known as Enlightenment.
If not does each and every personality have to actually return to it's true Identity before the Higher Self can continue through the Spiritual plane back to Source?
Yes - each personality must return to the Higher Self with its package of experience. Many personalities get stuck in the desire worlds of the Astral, or very often in a belief system territory, so there can be personalities in many vibrations - each must overcome its situation and return however.
Again though - keep in Mind that "time" does not exist, so everything is happening in the Eternal Now.
The reason I ask is because you said that "Once the Higher Self has gathered enough experience to progress, It assumes the personality of the most evolved incarnation and progresses as a complete Being." So that gave me the impression that not all other personalities have to achieve the same level of perfection as other personalities of it's Higher Self before It can continue.
That is correct. Keep in Mind that there will be some personalities will be in the "stone age" and some might even be early hominids of 3 million years ago relative to Earth time.
The reason humans have no memory of "past" - because "past" does not exist - is because many incarnations would be extremely traumatic, ending in a violent "death", and if a person knew about other incarnations they would not be able to function, being lost in trauma, grief, sadness etc.
If each and every personality must return to it's true Identity, which I'm assuming they do, then what happens when one personality achieves perfection before all the others?
"Before" does not exist.
Does the Higher Self wait until all It's personalities have progressed through all levels of the inner realms before finally reaching their one true Identity, the Higher Self? Can a personality progress all the way through the inner realms back to the Higher Self without achieving perfection, or should I say gaining enough experience in order for Higher Self to continue or does each and every personality have to achieve the same level of perfection as the personality who achieved it first, and if so, given that there is no time within these inner realms, does any personality really achieve perfection before any other? If all personalities have to achieve the same level of perfection wouldn't they all achieve that perfection at the same time given that there is no such thing as time? As you can plainly see, it's hard for me to fully grasp the concept of a timeless world given that our entire physical experience is based and depends on a linear perception.
Because you are thinking in terms of "time" which does not exist.
The Higher Self is the total of all incarnations - some Higher Selves need more incarnations than others - but perfection is achieved in a moment, notwithstanding the fact that each incarnation, when in the temporal, physical Universe, experiences "time"- which is an illusion.
How about this scenario. Once a single personality has achieved the necessary experience and level of perfection that it's Higher Self needs could the Higher Self call all other personalities back to itself at that very instant regardless of each personality's location within the Physical, Astral, or Mental planes or regardless of each personality's current gained experience or level of perfection? I know it sounds like I'm separating the personality from the Higher Self, and I'm trying not to as I know that all personalities throughout all timelines relative to Earth are the same Identity.
No - each incarnation must complete its experience.
I didn't mean to ask so many questions, hehe. They just started pouring into my head while writing this post.

I do think they are very interesting questions to ponder over however. If you have any feedback on any of these questions that would be great. If not then I have no doubt I'll figure it out eventually.

Thank again for your responses.

Your questions are excellent - it shows that you have been thinking deeply about these matters, and asking the right questions.
Ummm, I just thought of another question.

Would it make sense that our very last incarnation as perceived from a physical linear perspective be the incarnation that achieves the necessary level of experience and perfection to complete the incarnation process and for the Higher Self to continue? Or given that our Higher Self can pick and chose any timeline It wants to send an incarnation is it possible that a past incarnation (once again from a linear perspective) could be the one the Higher Self needs for completion in order to continue on? And if that is true then that would bring me back to the "scenario" question I asked above.
Well again these questions are all "time" based.
A better way of looking at this question would be in terms of numbers. The Higher Self sends as many incarnations as it needs to the physical Universe - not necessarily Earth - to achieve the necessary level of perfection. The Higher Self knows every incarnation, just as God knows every Higher Self as well as subset - incarnation of the Higher Self - and therefore can determine how many incarnations are required, in what time-lines, to which parents, in which country and so on.
Source, The First Cause, God does not need to do this, because God is unlimited and engaged in an infinite process of expansion.
In Love and Light,
Adrian.