If your room is lacking in natural light, don't worry. There's a hack for that: Simply place a light source in front of a mirror. The reflected light brightens any room instantly.
Designers frequently use this trick not only to add to the overall brightness of a space but also to make it feel larger. Any light source will do, including table lamps, floor, lamps, wall sconces and even candles.
Another bright idea: Painting the ceiling white will also brighten a room.