The speaker describes waking with discomfort and worry, then feeling reassured by looking at someone they love. The coming day may seem difficult, but the loved oneโs presence changes how it feels. The mood moves from strain and uncertainty toward warmth, confidence, and repeated celebration.
The sunlight that โhurtsโ the speakerโs eyes suggests that even morning does not automatically feel pleasant. A day that seems โimpossible to faceโ is an everyday way of describing being overwhelmed, not necessarily a literal impossibility. In contrast, โthe worldโs alright with meโ means the speaker feels that things are okay when this person is near; a single look has a powerful calming effect.
The song presents love as a source of comfort rather than a solution to every problem. The worries are still there, and the lyrics do not explain what causes them, but the speakerโs outlook changes. โA lovely dayโ may describe the actual day ahead, or mainly the speakerโs renewed feeling about it. The repeated phrase makes that hopeful feeling sound steady and joyful.