By "Jack" (Clean for 1.5 years. See his 90 day time-line here) "Ain simcha b'makom sheyetzer hara sholet - there is no happiness in the place that the Yetzer Hara reigns". This is brought by the Kitzur Shulchan Aruch in the halachos of sheva brachos, as a reason for men to sit separate from women. I am telling you, I feel so empowered by being clean, it's like doing Chigung (Chinese energy creating exercises). And when I get weak and look at a newspaper, or if I don't guard my eyes properly in the streets, I literally feel like I have no strength. It says by milchemes amalek - 'kaasher yorim moshe es yadav, vigavor yisroel, vi'chaasher yoniach, vigavor amalek'. If we lift up our eyes to the holy ideals in the Torah, we will come out ahead. And if we succumb, chas v'shalom, we will pay dearly, r"l.