I get these intricate downloads when I'm in the shower that I must turn into effortposts.
I think I'm going start by laying out this information as a glossary because it will be easier to organize.
Spirit: Your POV, experiencer self. "You" proper. It cannot remember, only experience. It is eternal; a piece of God.
Soul: An information pattern that sits "on the other side". It is created by the spirit's repeated experience of life. Its intelligence is animal-like (hence "anima" in Latin). It manifests reality.
You: The ensemble of spirit and soul. On death, they are separated temporarily and undergo different processes (outside the scope of this post) before reuniting upon reincarnating. The soul, as an information pattern, is what determines what the new life will be like (entry coordinates represented astrologically, for example). In the same fashion, the soul is what manifests reality moment to moment.
Maya: The reality the spirit experiences while incarnate is a projection, and an interpretation, of what has been called the "implicate order", meaning the whole thing is some kind of "holographic universe". Reality proper exists where the soul dwells, and the soul is what forms that projection for the spirit to experience. Or perhaps, it is the spirit who does the translation. But the soul is the mediator one way or the other.
Omens and synchronicities: Normally, reality is like an AI generated image; it contains all the information present in the prompt (the implicate order), but in a non-obvious way. It's a projection that has its own internal logic. Synchronicities happen when the information from the implicate order leaks into the projection in a way that reveals the trick. The illusion breaks down temporarily, and the experience acquires a dream-like quality for an instant, dreams being halfway between here and there. Another way to think about omens and synchronicities is the soul sending a message to the spirit using the reality it is generating as a medium. Spirits can send these messages, but the soul is always the mediator, if not the originator.
Magic: Inverting the process. Creating your own omens. Sending messages back through the same pipeline. This includes physically making them (sympathetic magic), or engaging in ritual or imagination. Their only requisite and common pattern is their symbolic nature (because that's how the process renders information across the divide). Visualization is a bit different because what the soul "sees" is not what you are visualizing, but what you're feeling (in the sense of sensation, not necessarily only emotion). Thus the imagination can be either symbolic or literal, or a mix of both, as long as it makes you feel its reality.
Remember that the soul is animal-like. It does not care about what is real and what it's not (from its point of view, experience is what defines reality). It is not moral, nor necessarily intelligent (but it can be wise, depending on how much past experience it can access). It does develop a conditioning that might make some magic impossible to perform, or some spirit impossible to contact when it would've been otherwise. If it is traumatized, or conditioned to "think" a certain way due to past experience (same thing). This is the point where magic leads the magician to self-improvement. Because certain magic will be impossible otherwise.
At a certain point, the soul and the spirit grow together, one more like the other, and that is the great work, and the result is immortality, in the sense that the soul will no longer carry the spirit from life to life, dying and being born, manifesting experiences uncontrollably in life and in-between lives. You will learn to create your own karma, your own destiny.
So, theoretically, by doing magic, and striving to get better and better at it, immortality is inevitable, because it draws spirit and soul together as a side effect. In a way, you could say the spirit is like a seed that germinates in the soil of physical reality, and the soul is its fruit, that when mature, takes the spirit away. Like the ending of the Darling in the Franxx adaptation, which was changed from the manga.