It seems that our brains are hard-wired to seek beauty. If we lost our hearing, for instance, we would want more than the ability to hear sounds again - we would want to hear beautiful sounds. We wouldn't be craving the sound of a horn honking or the screeching of brakes - we would want music.
Perhaps there's an evolutionary reason for this - I don't know. But what makes sense to me is that we seek beauty because it feels good. When we are surrounded by clutter and chaos, when our environment has too little color and too much trash, it affects us. We have less room for creative thinking, which means problems go unsolved, or solved only at the lowest level.
Sometimes all it takes is a single flower in a small glass to lift our spirit, or a photo cut out of a magazine. Simple things like these can bring us a greater sense of peace. Even the smallest shift in energy can bring about change, and we can have control over how we shift that energy.
Is there something that you do to shift the energy when you're feeling anxious?