Everyday we strive to reach something impossible. We want to look younger, make more money, live a full life and stand out in sports. However, according to Tal Ben Shahar, acclaimed Harvard University professor, the pursuit of perfection is the main reason for our unhappiness. As he puts it, either we learn to fail or we fail to learn. But, should we stop setting ourselves goals so high? Do we abandon our challenges? Is complacency okay? The author proposes to learn to differentiate between neurotic perfectionism and positive or optimistic perfectionism, as he calls it. In order to reach happiness we have to be able to enjoy success, appreciate it and accept the world as it is.