Place it at the end of a stressed-out scene as the release, after an emotional damage moment and before a light laugh. Pair the emotional damage sound first to build the worry, then let this clip answer it, and finish with a baby laughing meme to close the scene.
Über diesen Sound
This 5.4-second Portuguese voice clip has a relaxed male voice asking why worry about tomorrow in a light, almost sing-song delivery. It feels carefree and cheeky, turning stress into a shrug and making overthinking seem funny rather than serious. It comes from the Brazilian Portuguese dub of Woody Woodpecker, known locally as Pica-Pau.