Chaim wrote on 24 Jun 2009 12:52:
Tzitzis!
HaSHem tell us that they have the segulah for keeping our minds from straying.
So if I am confronted with a untznius sight - I try to "erase" from my mind by looking down and staring at my tzitzis. This replaces the sight, and possible start of bad thought with good ones.
If you have techeles - of course this is more powerful, as the segulah of seeing it - is what specifically is referred to by Chazal as the basis for meditation all the way up to Kise HaKavod.
I remember seeing in the Tzetel Koton some things to do if one is faced with seeing things that he does not want to. Anyone interested can have a look there.