If every single person on Earth did 1 - 4 it still wouldn't be enough. Change has to come from industrial polluters to have a real impact, and the only way to change industry is to stop driving growth through consumption. So...
5) Stop buying stuff.
5) Stop buying stuff.
Most ads are designed to make you want to buy something you don't need.
They keep you in a state of permanent dissatisfaction to keep you on the consumption treadmill.
Consequently they contribute to both global unhappiness and environment destruction.
If you still want meat in your diet, start buying less beef and more eggs or chicken. That'll be a good start. https://timeforchange.org/eat-less-meat-co2-emission-of-food
It will never happen.
We need more practical solutions.
Only 10% of people in developed countries would even think of making major changes to their lifestyle for such reasons ...
And there are 5 billion people in poor countries who are rapidly becoming 'consumers' and they don't care, at all. They want cars, appliances and 'stuff' now.
There's hope but I think it'll have to be really quite pragmatic, and more focused on supply and less on demand, i.e, solar, wind, a lot more nuclear and I wish we'd invest more in Fusion research.