The Bloch sphere emerged from quantum mechanics of spin-1/2 particles (two-level systems like qubits or nuclear spins) in magnetic fields, generalizing classical spin precession to quantum superpositions.
Authenticity, I suggest, is a continuum, a spectrum of stages, that may never end, since the self is a largely unknown thing, and that exploration of self, if done with regular determination, is always going to be revealing “new stuff”.