Read the excerpt below from a fictional narrative:
As the sun dipped below the horizon, painting the sky in hues of orange and purple, it became clear to Jamie that the journey ahead would be fraught with challenges. Memories of laughter echoed in his mind, juxtaposed with the weight of unspoken words he had left behind. Every step felt like a reluctant farewell, an act of defiance against the roots that held him firm in place. Yet, somewhere within the tumult, a spark ignited; there was a calling that couldn’t be ignored, a whisper promising liberation.
What is the primary way the author structures this passage to convey the protagonist's internal conflict?