This dissertation aims to analyze, in view of matters observed in the clinic, the relationship between two worlds: the world particular to the individual and the world external to that individual, represented by the so-called postmodern societies. The idea of a lost self is for us an image that represents what has been happening nowadays when people attempt to be a unity in our enormous communities. Using illustrative examples from the clinic, we will intertwine contemporary people s narratives with observations from Psychoanalysis and Social Sciences. We want to observe how societies treat their inhabitants and how much critical thinking can people have concerning the world in which they live. Among so many possibilities of being there is one in special that calls our attention because of its cunningness in thinking and acting. We will approach here this profile of people who manage to journey through the excesses the megalopolis pour down on them using a special filter that allows them to preserve what they have of most precious: their authenticity.