Smiles break down walls of sadness.
Meaning: Smiling can help people feel happier and less sad because it releases endorphins, which have mood-boosting effects.
Choice of Words: A wall is a structure built to separate or enclose an area. Sadness is a feeling of unhappiness or grief. When you say "Smiles break down walls of sadness," it means that smiles can make people feel happier and less sad.
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