I think this is useful. "I" seems to refer to two quite different coherent things current-me (specific thing) and general-me (collection of things I consider to be in group "I"), plus sometimes a few others which fall apart at edge cases, like physical and causal continuity "I"s. Consciously going over exactly what you mean by "I" makes it much easier to not skip around different definitions, though it is super-clunky in English.