Segula to Battle Hirhurim

To prevent illicit thoughts of promiscuity, one should say the first verse of "Shema Yisroel" and "Baruch Shem Kavod Malchuso Le'olam Vaed". If one constantly has these forbidden thoughts and can't seem to get them off his mind then while reciting the above verses he needs to shed tears. Reb Nachman says that this is what was done when the Jewish people were being enticed to have forbidden relation with the Midianite women. It says that they were "crying at the opening of the Tent of Meeting". Targum Yonasan explains that they were reading the Shema at this time. (See Likutei Mohoran 36 for more.)