Well, the sectors contributing the most carbon emissions are, energy, agriculture, industry and transport. So we could encourage investment in renewable energy, subsidize it's adoption. Put a tax on farm raised meat that subsidizes research on lab grown meat. Pass cap and trade, and place stricter limits on vehicle emissions.
This isn't an all or nothing thing, a save the planet or don't thing. We will have to deal with warming, and it's consequences. We can take some actions now, which will slow the rate at which the consequences arise, so that adapting to them isn't as hard. We can seek to find a balance between the current cost and the future benefit. The toll on the economy these measures might cause is largely nominal, because market externalities, like climate change, represent inefficiencies that are unaccounted for. Dealing with those externalities makes the economy more efficient.
I read about some interesting research recently. It was a small study, so this likely isn't a solution in itself, but for the first time, a drug cocktail, taken for a year,
reversed participant's epigenetic clocks. Maybe climate change is a greater concern for future generations, than it will be for us, then again, maybe you'll be around longer than you think.