We recently realized that our couch was blocking some light from the living room and dining area due too the way it was placed; it was up against the living room windows, and it blocked at least 1/5 of the light coming in. Its been this way for years and nobody had given it a second thought since we get a lot of natural light for the most part.
We spent the better half of the afternoon trying new arrangements of the living room furniture until we found one we liked that didn't block the windows at all. We're now getting more natural light and love the arrangement even more.
One of my lessons learned was that it's difficult to visualize how exactly things will look, so it's important to keep an open mind and be okay rearranging until you find something you like. Change can be difficult too, so things won't feel "normal" for a few days after a big reshuffle.
Head of Nook Incorporated