How does one purge low vibration desires?

[anagogy]

I would perhaps suggest not too look at 'low vibrations' as something to necessarily be 'purged'. There is a subtle activation of imperfection in that thought.

Consider the metaphor that a beautiful song is not a melody of one just one particular note, but rather, a natural and spontaneous flow among many notes, some of those chords residing low on the vibrational scale. All things are appropriate at certain times. Don't judge yourself too harshly.

When you can see the perfection even in the so called lower, then that which is no longer needed will fall away. When you try to 'get away from something' you just embrace it closer, and activate it even harder.

Do less what society 'thinks you should do' and more what 'feels right and natural'. The creation is not centered in the intellect, but rather, raw emotion. Learn to FEEL. It is the bridge between the intellectual mind (material) and the intuitive mind (spiritual).