Displeased couple having problems during a meeting with their agent in the office.gettyToday we’re going to talk about a subject that might seem a little outside the dividend plays we normally discuss.But as you’ll see, this topic—a big shift in how Americans feel—is the main reason why some of our favorite high-yielding closed-end funds (CEFs) are woefully underpriced, like one equity-focused 9%-yielder with an incredible track record.Let’s start with that unlikely topic: Happiness. It matters because, as ...