When you get cut off in traffic :)
A thing of beauty is a joy for ever: Its loveliness increases; it will never Pass into nothingness; but still will keep A bower quiet for us, and a sleep Full of sweet dreams, and health, and quiet breathing. Cherish your visions; cherish your ideals; cherish the music that stirs in your heart, the beauty that forms in your mind, the loveliness that drapes your purest thoughts, for out of them will grow delightful conditions, all heavenly environment; of these if you but remain true to them, your world will at last be built. Life is full of beauty. Notice it. Notice the bumble bee, the small child, and the smiling faces. Smell the rain, and feel the wind. Live your life to the fullest potential, and fight for your dreams. For every beauty there is an eye somewhere to see it. For every truth there is an ear somewhere to hear it.