Avoiding the news cycle
I make a conscious effort to avoid the news cycle. It makes me angry and frightened. Instead, I focus on things within my circle of control (check out Mr Money Mustache's fabulous piece on this concept).
Basic self care, tending to your relationships and the work day are quite enough for me. This may sound banal compared with fevered rhetoric about saving the planet, restructuring our societies and so on. But the more of us that keep what's in our purview in check, the better for our wider community.
To me that seems a good way of bettering our world across time. And in the immediate term you might just be a little less stressed out.