The poem is a single quiet thought: the speaker believes a day will come when they can put everything away, and then admits they have no idea when that day will be. "The things" are never named, which leaves them open. They could be worries, belongings, memories, or responsibilities the speaker has been carrying for a long time. The poem doesn't say, and that vagueness is part of its pull.
What the speaker feels sits somewhere between hope and weariness. "I believe" sounds like a small act of faith, something they hold onto without proof. But the second half, "i just wonder when is the day," undercuts that faith with uncertainty. The missing question mark and the spaced-out period in the middle make the voice sound tired and unhurried, almost like someone thinking aloud.
The mood is soft, patient, and a little lonely. Nothing is resolved, and the poem ends still waiting.