When that question - Who am I? - pops up in my mind I realize I'm thinking of the long haul of my soul.
I believe my soul is infinite in scope without borders mentally and physically.
Sometimes in meditation I experience myself as soul and feel limitless, like I extend out to infinity.
Who am I? My thoughts: Limitless consciousness as soul, while living in a physical and mental body for the time being to experience relationships physically, mentally, emotionally, and grow in caring love.