AUTHENTICITY
Living authentically, at least to Sartre and many other existentialists, is a matter of grasping our own freedom. Indeed, the authentic person is, for Sartre, the person who recognizes their own radical, terrifying, exhilarating freedom and lives into it. We are free to do what we personally feel is the right choice, and we are authentic if we take that freedom to do the right thing. By this metric, aligning our ethical assumptions with our actions is authenticity.