Now and then you change - according to the strength of your desire - the image, the god, the object, of your sense impressions.
You are for instance fed up with one kind of lust, and therefore you seek a new influence, a new idea, a new symbol.
You reject the old sense impression and adopt a new, with new words, new meanings, new experiences.
You defend yourself against the old, and surrender to the new, which you consider as being superior, nobler and more satisfying.
In that way there is in the desire both defence and surrender, which is implying temptation; and naturally, when you evade from a certain symbol of desire, there is always an anxiety present, the anxiety of becoming disappointed when surrendering to the new symbol.
Therefore desire contains conflict.