Here are the most impactful things you can do as an individual in a democracy:
1. Convince as many people as you can of voting for anyone who supports carbon tax.
2. Vote for anyone who supports a carbon tax.
3. There is no 3.
We need to internalise this negative externality into the very fabric of every transaction we make. By the time you can see a product you have no idea how much carbon was produced to make it.
Don't just walk back from the abyss. Drive back in the same car that got us here.
(by all means of course reduce your footprint, but don't forget nr 1 & 2. they must be front and centre.)