Across every domain of our lives, our minds have a tendency to get accustomed to things. In fact, the brain seems evolutionarily designed to focus on the new and unexpected, on novel threats and opportunities. In our daily lives, this means we take wonderful things for granted. We cease to appreciate amazing people, or the good fortune of being healthy. This week, neuroscientist Tali Sharot explains why we get used to things — and how to see with fresh eyes.