Well there are some fundamental things that you can do to get the chi flowing in your home in a positive manner. This energy flows from the universe to the earth and from the earth to the universe. It is like a spiral vortex of energy. When chi is blocked in flow either from the universe to us or from us to the universe there is disharmony and imbalance. Chi is seen as positive energy.
Negative energy is called shar.
The goal in Feng Shui is to increase and maximize the flow of chi and to eliminate all shar. There are several things that will block chi. The most important one is clutter, dirt and disorder. Therefore the first step in Feng Shui is to organize, divest oneself of unneeded items, and to keep an area spotless. Also, dead plants, brackish water from not changing a flower vase, and so forth creates shar and brings imbalance.