Instead of striving to be superior to other people, we should aim to be superior to our previous selves. It can be easy to assume, judging from the content people post on social media, that they lead perfect lives. As we sift through photos of Facebook friends sunbathing in the Caribbean, sharing cheesecake at a 5-star restaurant with a partner, or driving away in a souped up Mercedes Benz, we may find ourselves green with envy. But comparing ourselves to others -- whether our coworkers, our neighbors, or are friends -- is an exercise in futility. Really, people are not some monolithic group. We have different tastes and interests, goals and fears, struggles and challenges. While it's good to look up to others and admire what they've accomplished, there's no sense in wishing for the lives they have. After all, they may be doing a good job at masking the fact that their lives leave a lot to be desired. They may very well be having health, money, or marital problems...