7. Plan for Inviting Lighting7. Plan for Inviting Lighting Lighting in the living room should be geared toward creating a relaxed, comfortable mood. Aim for layers of light, and position light sources so they form roughly a triangle to ensure good distribution of illumination. Table lamps that focus the light down will encourage people to sit down and relax. The overlapping arcs of light illuminate the seating instead of the upper walls, sending the message to sit.