Walk around your home freely. Do you stumble on furniture or rugs? Do you have a hard time opening doors? Air should flow around everything in your home. Move furniture away from walls, even if just a couple of inches. Pull furniture pieces together to create an area where air can flow around. Use your windows. Natural light is very important and brings with it tremendous energy.

Windows should never be blocked. In the practice of Feng Shui mirrors are often used to reflect this energy into other areas of the home, but you do not want to bounce the energy back out doors. Mirrors are called the aspirin of feng shui and with proper placement, they can dramatically shift the flow of energy in any given space. Mirrors also bring a sense of refreshment and calm.
Source: Freshome