Your body is an instrument a complex conductor of energy and intelligent spiritual thought. Your nervous system is a kind of computer or perhaps the network your computer is connecting to. Biology, physiology, psychology, philosophy, spirituality, religion are all interfaces to understand your own machine. Whether you approach it scientifically or philosophically is whether you are observing hardware or software.
This is one of the broadest topics that is really being dissected and torn apart today with the rise of AI and computer learning, but goes all the way back to the Greeks and beyond!
The thing that constitutes the "I" that you are is just patterns of ideas and thoughts and behaviors in the form of electrical / chemical impulses in a brain. You spend your whole life transmitting those patterns to the people around you by communicating with them. When someone "gets to know you" they are building a simulation of you in their mind. The more time you spend communicating and observing each other, the higher fidelity that simulation becomes. Importantly, there is no true difference in "kind" between the patterns-and-thoughts-and-behaviors you hold in YOUR brain and call "I" and the patterns-and-thoughts-and-behaviors others hold in THEIR brain and give YOUR name. It's not a perfect copy, but it's also not NOT a true version of YOU. That means when you die, you *literally live on* as a distributed simulation inside the brains of everyone who ever met you and came to know and love you.
(This is my poor paraphrase. Check the link for relevant excerpts)
The deeper into my own art and true essence i get, the stickier the grief moves. Godddddddd RELEASEEEEE MEEEEEE. Choosing myself will pay off soon. I just have to swim through a lot of bullshit.