At a minimum there's who you are inside and who you show the rest of the world, but the latter of those can change situationally and the former can be so splintered as to comprise multiple selfs. Although you could consider any distinct internal selfs parts of the same overall self. And I personally consider the selfs I show the world more like different hats I wear than different versions of myself. Some people may even try to assert that the self doesn't really exist at all. Any definitive answer is likely to be highly debatable, so you'll just have to decide for yourself(s?).
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