If you prefer to change the ceiling light, take a look at semi flush style with brighter lighting for the room, but change the switch to a dimmer switch. Pull the rug forward so the chair is included on the rug. Pull the sectional about a foot away from the windows and add a tower light in that corner. A small lamp on the side table. The floor lamps will bring more warmth and lighting options in the space.

No ceiling lights in the living room or bedrooms - that will look like a hospital room. Think of lighting in a layered way. Start with a table lamp or wall sconce in each corner at chest height. Another type of lighting is task, which is for a particular item, such as a peice of art or sculpture.