How Sadness Can Help. Psychology Post.

Beyond Happiness: The Upside of Feeling Down
Negative emotions do us a great favor—they save us from ourselves. They're signals urging us to change what we're doing— and they're actually necessary for feeling good

That's the caption from a quite long psychology post fround here.

The post basically goes through quite alot of negative emotions and explains how they can help us.

Well I should be king of the world. The world should be a paradise. Soon my precious.