I love lighting.  I mean I really LOVE lighting!  I love chandeliers and lamps and sconces and pendant lights!  I love them all and I love what they do for a room and for your decor.  Lighting above all will make the biggest difference in your space.  Bigger than paint or rugs or color or texture.  But I feel like it is the thing most commonly overlooked by people when decorating or redecorating.  I don't know why, perhaps it is that sometimes new lighting can be costly or because it will take a professional to install if you aren't familiar with electrical work and can't DIY it? Either way it worth the time and money you will have to invest!