She is the beacon of hope for humanity. She stands for the values that represent the best in us. And she not only tells us how it is, she leads the way.

Yes, that is great on an individual level.

But the best thing to do overall for our environment and climate is supporting protest movements, especially those employing nonviolent civil disobedience. Per pound/dollar/euro, they reduce emissions the most. But if you can, attend events in person.

This should not neglect that we need both individual and system change and they depend on each other. You should reduce your meat consumption and advocate for a world where everyone reduces meat consumption (and even become vegan or at least vegetarian).