The poem is only a few lines long, but it holds a surprising idea: that sitting still for a whole morning can change you. The speaker doesn't go anywhere or do anything. Yet the stillness itself becomes a kind of transformation, and the title, "Reinvention," tells us this is a real remaking of the self, not just a quiet pause.
The final image is the strangest part. A well of dry ice is a deep, hollow place that gives off cold vapor, smoking and drifting upward. It suggests the speaker feels emptied out, but also strangely alive, as if something misty and weightless is rising from within. Dry ice doesn't melt into liquid; it turns straight from solid to gas, which fits the sense of changing state without a clear in-between.
The mood is calm, a little eerie, and quietly wondering. The speaker seems less alarmed than curious, watching the change happen from inside it.