It seems to me that the concept of personal identity - as a coherent whole - is a corner stone of Western culture. We build a LinkedIn/Facebook/etc. profile to sell a whole personality. We go to therapy to address our "core" being. There are so many examples of the direct or indirect reference to the concept of a "coherent personal identity". However, in a multicultural accelerationist society, this concept seems to lose its purpose. Is there any philosopher who could help address this situation and find a post-modern theory (or anti-theory) of identity?
I think Buddhism fits.
The conventional self is deconstructed, which includes things like how we want to appear socially. Awareness itself is recognised as universal and unifying, and manifesting in the present moment - when we drop obsessions with the past and future that shift our focus away from it.
When we develop skills to do those things (deconstruct, recognise what we have in common, return attention to the present), we can act for all beings, and in ways that make sense regardless of outcomes.