How do I practice Buddhism to attain peace of mind and know the inner self? I am distracted by the surroundings and at times lose my presence. I think deep down on the perspectives like meaning of life, purpose of life, focus on the one who really are, but get distracted many times.
Read the Satipattana Sutta and the Anatta Lakkhana Sutta and do Satipattana meditation. Examine the things you consider to be the self and see if they are worth taking as a self. As for the inner self, examine if there's anything inside you that is worth considering as a self.