Here the speaker is homesick for a time, not a place. They ask to be taken back to childhood, a world of falling snow and no worries, before something knocked everything off balance. The image of a rug being pulled from under their feet suggests a sudden loss of security, and the speaker admits that since then even the idea of living has felt frightening.
The middle lines hold the poem's turning point. The saying "Life happens in an instant" sounds almost like a shrug, yet the speaker gives it weight: people who once were close have drifted away. "I never thought life would turn out like this" is plain and quiet, and that plainness makes it hurt more.
The mood is wistful and heavy, with a note of sadness and isolation. The repeated "Take me back" and "Bring me back" read like a plea, and the trailing dots at the end leave the wish hanging, unanswered.