Don't you know Sri Ramakrishna is the very embodiment of radiant purity? If you meditate on His blessed form and repeat His holy name, impure thoughts will hang their heads in shame and disappear in no time. The moment an impure suggestion comes to your mind, cry to Him fervently and pray: *"Lord, I am weak. Protect me. Unless thou savest me, who else will do so? Am I not thy servant and have I not taken refuge in thee?"* Talk to Him in this way about your weaknesses. He will certainly listen to your prayers. *Source:* For Seekers of God by Swami Shivananda