You should go read the whole thing, because I think there’s a certain amount of self-awareness that is required to truly identify the early signs for depression or other struggles.
For example, I know that there are two signs for me that might mean I’m headed for some struggle with depression, and neither one of them look like sadness. First, I start to get incredibly irritated, and then, because other people irritate me, I start to withdraw and isolate.
If I look at the standard explanations and visual images we use when we talk about depression, I don’t see those signs. I’m not sitting around listening to sad music, crying, or over-eating. I’m too angry for that.
I suspect for many people their depression may not look like that either, it may look a lot more like some of the things in this article.