We need to focus on how to get the entire planet to execute on the same actions. That is our only hope. If 80% of the planet goes green, but 20% is still emitting pollutions, we are still in the same boat (just not sinking as fast). Getting individuals to do what is necessary will simply take pricing things correctly and making laws; most humans don't want any trouble and will easily be able to live a more sustainable life just through peer pressure.
FOCUS ON INTERNATIONAL CONSENSUS. This will serve us in all problems, not just global warming.
To put it another way, if you have a cold, you don't solely focus on making the cough go away. Just drinking cough syrup isn't going to fix it. Global warming is the "cough" to our "cold". If we just "fix" global warming, we still have soooooo many other psychological issues as a species that it's not going to "save the planet". We can't even agree if humans should live or die. There is so much nihilism that there are lots of people who are content on doing whatever; until they die. Lo, they prolly want death and are just to scared to do it themselves.
This is a legit problem; that many humans (either through religion or personal belief) don't WANT humans to live; or don't think we deserve to live. How are you going to solve that by solving global warming? We can't even agree that, regardless of our impact on the climate, we should be as clean to our environment as we can. Half the population only cares about GDP.
Go back to first principles and let's SOLVE THIS. We all watch the Avengers, but don't come out wanting to BE THE HERO. We can solve this. We can't save all the animals; but we can solve this.
So stop bitching, let's come up with solutions. Until the last second on the game clock ticks, you are in the game. Make a friggin' play. (YES YOU!)