The Lights Are Flickering
Unless you’re hosting a disco party, flickering lights aren’t a good sign. First, check the bulb in the fixture that’s flickering just in case it’s loose. You can also try replacing it with a new bulb.
If the flickering continues, or if more than one light bulb is flickering, it could be a sign that wires somewhere along the circuit are loose or your home’s wiring is not adequate for the amount of electricity you’re using. An electrician can diagnose the problem, fix loose wires, and add additional circuits, if necessary.