‘Sri Sri Ramakrishna Leelaprasanga’, the most authentic biography of Sri Ramakrishna, written by his disciple Swami Saradananda. Translated to Gujarati
Discriminate within yourself between the real and the unreal. Have you not read the Vedanta? Even when you sleep, keep the sword of discrimination at the head of your bed, so that covetousness cannot approach you even in dream. Practicing such strength, renunciation will gradually come, and then you will see the portals of heaven are wide open to you.
-Swami Vivekananda