We get it. Sofas are a big investment, and they're hard to transfer from one home to the next, so you might be inclined to stick to your hand-me-down or an IKEA basic. But no matter what your sofa is, it should never be the only piece of furniture in the room. Decorate around your sofa with a rug, side tables, pillows, and throws to give your room a layered look.
Whether it's a couple of bar stools at the kitchen counter or an eight-person dining table, you should set up a proper dining space. You can only eat in front of the TV (or worse in your bed) so many times before feeling like a lonely caveman. Sit at a table to feel like a grown-up and entertain your friends on the weekend. You'll appreciate your space much more.