How Do I Understand Thoughts of Sensual Desire?

There's a theory in modern biology called Morphic Resonance. It says that once something arises in nature, it's much easier for the same phenomena to happen again. So we are reconditioning our minds with the repetition of particular kinds of thoughts,. The more often they're repeated, the more probable they become. There's a third cause for the arising of sensual desire: We have a basic misperception of what brings us happiness.