If you know someone who’s depressed, please resolve never to ask them why. Depression isn’t a straightforward response to a bad situation; depression just is, like the weather.
Try to understand the blackness, lethargy, hopelessness, and loneliness they’re going through. Be there for them when they come through the other side. It’s hard to be a friend to someone who’s depressed, but it is one of the kindest, noblest, and best things you will ever do.