Some everyday household items quietly influence our lives in ways we rarely question. One of the most powerful—and most underestimated—is the mirror.

At first glance, a mirror seems simple: it reflects your image and helps you get ready for the day. But across many ancient traditions—from China and India to the Middle East and the Americas—mirrors are believed to do far more. They are thought to amplify energy, strengthening whatever they reflect.

Placed thoughtfully, mirrors can enhance light, balance, and abundance. Placed poorly, they may magnify stress, conflict, exhaustion, or loss. If you’ve noticed restless sleep, constant tension, or money slipping through your fingers, your mirrors may be quietly contributing.

Below are three of the most harmful places to position a mirror—and what to do instead.