Starflame
Nicely written ideas! Within my own way of interpreting my own life, and after a lifetime of searching for answers, I can finally now confidently state the semi-final answer: "I don't know how it works." 🙂 Though electrical physics was my profession, and though I can ramble for hours on various topics of how life proves all theories to be wrong (including science's), still it is not possible for a three-dimensional mind with three-dimensional sensory perceptions to adequately comprehend the nature of a thing (consciousness/soul) that has no dimensions.
As an easy example (that no one is safe from hearing me speak of 😉 ), there is no such thing in the universe as a stable electrical wave, and especially not for the 70 to 100+ years of a person having the same "I" consciousness. It simply cannot happen: ever. All theories of an 'electrical brain' are extraordinarily easy to be proven incorrect.
Seemingly all topics directly relate to the 'problem of consciousness', including 'time' itself (oh how I enjoy talking for hours on that topic also!). When the topic of reincarnation is researched with sincerity, it is found that an individual must become quite proficient with physics, biology, intelligence, emotions, all acts of thinking, and even music: topics that cannot be learned from a book nor in a classroom.
Nevertheless, there do exist evidences of the natures of non-dimensional consciousness, but recognizing their existence requires prolonged personal dedication and effort. For very specific reasons, descriptions of the natures will never be made public, and neither can the reasons be spoken of.
Related is a word per word translation of the Taoist book 道德經 Dao De Jing #56:
知者不言言者不知
'Know person-ist not speak. Speak person-ist not know.'
A popular modern English version is 'He who knows, does not speak. He who speaks, does not know'.
Another example is from the Confucian book 先進 Xian Jin #20 (a word-per-word translation with use of dictionary words):
子張問善人之道子曰不踐跡亦不入於室
'Zi Zhang inquired virtuous person his way.
Zi (Confucius) replied: Not walk-on footprint, also not enter in room.'
Answers are not in books, nor in classrooms, nor in temples, nor from following other people's paths. Answers, are always, from oneself.
"It makes me appreciate the mystery of simply being here, now, with the chance to think about these things at all."
Excellent. There, that is the one and only way that I know of to find answers; to think for oneself. It will take decades of continuous effort, but the answers to most questions can be found if a person sincerely strives to find answers.
When an individual has begun acquiring answers, the individual is then able to recognize the grievous errors that invalidate all ideologies' books, including "The Tibetan Book of the Dead".
"...choose the version of rebirth that makes us feel the best, even if the original ideas included harder possibilities, like being reborn into suffering."
A fun parallel is the Chinese drama "Eternal Love" also known as "Ten Miles of Peach Blossoms". It is a two-season series of souls incarnating for the purpose of learning through firsthand experiences. My wife and I recently finished watching it for the second time (about 114 episodes on DVDs).
Some of us have suffered harshly all of our lives, but we found what we came to find, and now we would never trade the present live for anything different. To literally cry with intense happiness and overpoweringly burning love, it is worth living this life all over again a million-billion times.
To "feel the best"; think of your life's happiest and most wonderful moment. Now double the strength, then multiply the strength again, and continue exponentially increasing the strength to where it feels as though the body is disintegrating cell by cell. As the body adapts to the strength, in future years the intensities of happiness can continue to increase.
Emotions are not fixed. Emotions have very specific physics. The only limit of emotions is the body's ability to withstand the intensities. And, there are many more emotions than what dictionaries, school rooms, sciences, books, and ideologies claim.
Welcome to the search for answers!