Rabbi Yaron Reuven brings a profound lesson from the Vilna Gaon on Proverbs 13:19. "A lust broken is sweet to the soul, but turning from evil is an abomination to fools." The Vilna Gaon says that overcoming a forbidden desire is very difficult at first, but once a person overcomes it, they get the most amazing feeling in the depth of their soul. But fools see those that have done TeShuva, and started guarding their eyes, and dressing modest, and they hate it.