I remember hearing once that nothing kills joy like comparison. That is exactly the premise of Kay Wills Wyma's latest book, "I'm Happy for You." In twelve chapters and two hundred five pages, Wyma describes a problem that has existed from the beginning of time. We're constantly measuring ourselves against everyone around us and either we end up feeling less-than or we get puffed up on selfish pride. We even compare ourselves to better versions of ourselves - remembering times when we were thinner or our social calendars seemed fuller. Everything we do becomes about marketing ourselves, and yet this constant comparison is keeping us from joy in our lives. There is no one exempt from this epidemic, especially in the age of social media. The key to contentment? Learning to be genuinely happy for others, even when it is difficult to do so. The key is literally in the title of the book. How to say, "I'm happy for you"...