this is why buddhism says there is no “self” in an eternal sense. in every moment, we are different than the last. vajrayana even has exercises you can do where yu mentally try to locate the “self.” is it in your forehead? your throat? your arms? and so on (actually doing it was amazing, to me). there is no self to cling to, no self to defend. all things arise from beginningless beginning due to the circumstances for it arising, and they end when the circumstances for them to remain end. (im not as good at explaining philosophies as you are, but did feel to add this.)