Even if you are not sure of the truth or the reality of Buddhahood inherent in your life, if you chant Odaimoku, Namu-myoho-renge-kyo, if you carry out the practice and study of the Lotus Sutra, it is possible to awaken within you that spark which will allow you to see the reality of your own enlightened nature. Just as the arhats thought it not possible and so they chose not to try, and just as this son in the Parable of the Rich Man and His Poor Son did not in the beginning think he was worthy of staying in the house, eventually through the compassion of the Buddha and the compassion of the father each of those people were able to elevate their life conditions to enable them to see a potential in themselves they had not seen before.