The "useful" lesson he took from the music was this: By accepting that the feelings were lost, he finally stopped fighting the silence. He realized that the dawn only comes to those who have actually walked through the night, rather than trying to hide from it. Key Themes of the Song
Darkness represents the "fragments" of a broken soul trying to find a way back to the light.
Acknowledging the "tiredness" that comes from toxic cycles and lost passion.
Here is a story that captures the "useful" emotional lesson within the lyrics—the journey of moving through grief rather than being stuck in it. The Story: The Echo of the Night