Psychologists call this phenomenon birthday depression, a feeling of melancholy or irritability that arises around one’s ...

In a recent blog post, I listed 10 qualities of mentally healthy people. One of the qualities that I mentioned was the ability to be happy for other people, even when we're not happy in our own lives.

The next time someone tells you to turn your frown upside down, you can use bestselling author Susan Cain's new book for a comeback. In Bittersweet: How Sorrow and Longing Make Us Whole, Cain writes ...