A Jew needs to use both the attributes of humility AND haughtiness - but both, for the service of Hashem! As the Pasuk says "Vayigbah Libo Bedarkei Hashem" - "and his heart was proud in the ways of Hashem" (about one of the kings of Klal Yisrael). One of the previous Karliner Rebbes once said, that when a Jew wants to serve Hashem he should feel humble and broken hearted that he hasn't even started to serve the Almighty as is worthy of such a great and awesome G-d. However, when he goes into the street, he should arouse his pride and remember that he is a ben-melech - A son of the King, and that it isn't appropriate for him to be pulled after the lowly desires of this world.
This follows the Ba'al Shem Tov's teachings that every Middah (attribute) needs to be used for Kedushah. The same applies to lust and love for forbidden pleasures. It is our job to learn to transform our lust for flesh and blood to lust for Hashem... And the Ba'al Shem Tov also explains how the "love" we feel for forbidden things is actually a "fallen" love of Hashem. For Hashem is the source of all love, all beauty, all pleasure and all desire. All of the Middos are rooted in the upper worlds and they all come from places of holiness. But they have fallen to the Klippos and been downgraded in this world of darkness. As children of the king, it is our job to uplift these attributes and return them to their source, by using them for Kedusha!
So when the heart is pulled after the things we see or things our Yetzer Hara wants us to do, we need to cry out to Hashem and say "Hashem! ... All this love I feel, all this lust and desire! It belongs to you. You are the source! Help me, help me please Father, to direct my lust and love towards you, for you are the source of all beauty and all desire!" And when we walk in the street, arouse your pride as the "son of the king", and don't let yourself be pulled after the filth and grime of the Yetzer Hara!