In Vastu Shastra, mirrors influence a home's energy, and cracked mirrors are believed to cause disturbed clarity, stagnant progress, and emotional unrest. Broken mirrors should not be kept in common areas, bedrooms, or bathrooms; they reflect fragmented images that can foster confusion, irritability, and low energy. Vastu advises repairing or respectfully disposing of damaged mirrors and keeping all mirrors clean, intact, and well-placed to maintain harmony.