Wow, so many amazing insights to the big questions in life!
Thank you 
I wanted to share two personal insights that came to me related to this when I was reading it:
Reading this reminded me of a graphic I saw in the book “Multidimensional Man” by Jurgen Ziewe, a very cool astral traveler. This is how he tried to picture the multi-dimensial world with the many different physical and astral universes:
The world and multi-universe is truly gigantic beyond our current comprehension. Humanity can’t even yet grasp the full size of this physical universe alone and yet it is just a sand grain compared to what is out there 
Jurgen Ziewe’s astral travel books and YouTube channel are very insightful. He also makes cool VR videos where he tries to replicate the landscapes of some of the astral places that he has visited.
I was truly shocked when I first came to this realization around a year ago – that most of my “I”, my personality and my personality traits are actually not real and just temporary tools I have chosen for this particular incarnation and that these are not actually the real me. Just temporarily borrowed software pieces. Which then also applies to all “my” incarnations.
And this is not just about “beliefs” and “thoughts” level here.
Pretty much all of my personality traits, like favorite things and tastes, personal strengths and weaknesses, desires and apathies, my communication style, interests, my preferences in life, maybe even the whole construct of the psyche, all the stuff I believed would be “my real personality” – all artificial and all only chosen so in order to play a specific character role in this incarnation.
The true me as pure consciousness and Higher Self simply wears different personalities and personality traits like dresses when it goes out into its different incarnations.
However, with this realization also comes liberation:
One can be whatever and whomever one wants to be.
Every role is possible.
The life game can be played less seriously.
Incarnational roles can be re-negotiated with the Higher Self.
Personality traits can be unistalled and others can be installed.
Realizing this, means now for me that there can truly be no excuses by my old self/ old role anymore on why “I can’t do this or be this or that because of this and that”. Of course putting this new realization into reality is a different story but the realization of what is artificial is also the realization that all can be changed.
And I am constantly pushed by such realizations with the aim to get rid of any remaining excuses and victim mindset fragments and instead 100% take full responsibility to manifest my life. I know I have to. How else can I can become my already existing future self? 