I hope I'm wrong but living in the UK, I really don't see how we get from where we are now to somewhere sustainable fast enough to make any sort of difference.
It may be unfortunate, but it's also necessary. Investing in improved insulation is a good thing regardless, but I expect air-con to also be necessary. Given where we are right now and the huge inertia in the system, even in the best possible case of 100% of world governments and people getting on-board with reducing emissions as fast as possible right now, we're still looking at severe impact from climate change, and we will have to adapt to cope with the weather events (like heatwaves) that that creates. Hence, air-con. And flood barriers. And making plans for how to use public buildings as heat shelters or disaster evacuation shelters.
(All IMHO, I am not an expert, etc)
https://econormalisation.kapsi.fi/ this was an incomplete but interesting take on a possible solution.
Besides the normal peoples guilt will be a huge blocker for anyone to even start thinking about personal cap.
Addressing current/emerging problems over future problems will be the next policy battleground on climate.
Heavily tax mass transit but allow private jets, etc.
Use the revenue to subsidize green projects.