The idea of authenticity of life calls to mind the obvious fact that many individuals,seriously and inconsiderately,have allowed themselves to be swallowed in the faceless crowd to such extent that they have completely lost their true selfhood.It is an apparent danger in the existence of man,especially in modernity,that abstraction is substituted for reality.Nevertheless,the truth of the uniqueness of each individual person and the various and different situations of life where an individual person cannot but make a personal choice and decision engendered in man the need to necessarily authenticate his being.The researcher,therefore,deems it not only important but very expedient at this point in time,when there is not only a loss of personal identity but more still a total flow of existence in our modern society,to pinpoint what authentic life should be and how it is to be achieved.Hence,this work demonstrates how a Danish philosopher,Soren Kierkegaard,has done a masterly work of authenticating one’s existence.He emphasized that one should become an individual person instead of being swallowed up in the appraisal of untrue crowd.In order to accomplish the goal,the researcher primarily applied the philosophical reflective approach.