The ego is inauthentic by nature since its existence is to be embedded in a social matrix each node of which is just another ego. Attempts to escape into some putative authenticity are doomed however, they merely disfigure the matrix locally. If you could fully grant yourself existence this would not ground you in reality, merely in your own mirror image. The only way to be authentic is to embrace inauthenticity while fully aware of its limitations - this is known as compassion.