Lighting plays a very important role in people's life. A lack of proper lighting can cause headaches, fatigue, and other physical and mental health problems. On the other hand, proper lighting levels can help people performed better at tasks, be more alert, and avoid accidents. Lighting in interior spaces needs to be balanced and carefully considered. For example, the amount of light in an office or a classroom should be just right to ensure the comfort and concentration of the people in it, but not be so bright that it causes eyestrain and headaches. Natural light should be the main source of illumination since it provides the most energy-efficient and comfortable form of lighting, but where natural light is not available, energy-efficient light bulbs must be used to provide the necessary lighting. In addition to energy efficiency, lighting can also be used for aesthetic purposes, to create the perfect atmosphere for any given space. Lastly, lighting can also be used to create an emotional environment, where warm colors create a feeling of comfort and cool colors create an atmosphere of energy and alertness. Properly planned lighting can also be used to highlight certain areas of a room, such as artwork or important objects, to attract attention and create a more interesting environment. Overall, lighting is an essential component that should be considered in any design, from the home to the office, to ensure the comfort and productivity of the people who inhabit it.