Depression is complex, but nature, walking, the sunshine, the chance interactions and exercise are shown to increase mood chemicals in the brain.

The only thing keep on the whole world from feeling depression is brain chemicals.

To me Depression is a symptom of a broken societal model. We no longer live as communities, we dont feel protected, we dont celebrate daily/weekly with family and close knit circles, we don't have a sense of accomplishment with modern work and life imbalance. We need to fix that before depression starts fading out of our societies.