Second of all, me reducing my fossil fuel usage to 0 wouldn't magically drop industrial fossil fuel usage to 0, so that's not even a solution to the problem.
A new technology or enforced policy would have a much greater effect.
This attitude in the general public is our death knell. The only, and I do mean ONLY, solution to not fucking up the environment beyond repair is the concept of less.
Less SUVs, less air travel, less fast fashion, less computer monitors, less phones replaced less quickly, less heating and cooling of our homes and more getting acclimated to the climate, less fucking juiceros and interent connected butt-plugs, less non-seasonal vegetables and meat, less eating of beef and pork and chicken and more plants. Reduce.
I love to quote idlewords on this all the time, but we as a species can't even handle male pattern baldness. To somehow expect that we can engineer our way out of the complexities of nature with time to spare and without any impacts on how we live life in the wes is a completely misguided belief. The technological breakthrough that will be our saviour is not just around the corner. Musk and Tesla aren't our saviours. 'Less' is.
Agree on the first, but the second is hardly likely. We would have to devise some miraculous means of global collective decision-making, with an eye to long-term consequences. Not even the most Panglossian UN weeny could imagine we're within decades of this (millennia is more likely).
The moment evolution tossed up a creature with the cognitive flexibility to invade all niches, and evade population-scale threats to fitness, universal overrun was a biological inevitability. Next time perhaps.
It will come when climate change is obvious even to the most arrogant denier troll. It won't be pretty, for anyone. We'll get to watch governments trying to force things whilst our major infrastructures are still built for economics of short term growth and ignoring externalities.
Going from a couple of hundred very disparate nation States to a global benevolent & rational authoritarian regime isn't something I can imagine happening in the next 50 years or so without nukes getting involved. Admittedly predicting the future outside of immediate trends is a mug's game.
There's a huge boom of solar at the moment not because people give a shit about the environment, but because the technology has made it a viable alternative, and tax incentives have reduced the barrier to entry.
There is a "wonderful" movement called the Dark Mountain movement. It is a collection of formerly uber-passionate environmental activists who've essentially thrown in the towel and decided Humanity ist kaput. Their leader now gives lessons on how to use scythes instead of lawn mowers to cut grass. Others have found similarly low tech pastimes to keep themselves occupied.
If we want less we need to understand the order of magnitude that the different forms of less have.
I note that such a reduction is achieved either by having less per person, or by having fewer people.