"As individuals"? No. Nothing we can do as individuals is remotely equal to the scale of the problem. I mean, sure, drive less, fly never, get solar panels — all good things. But if everyone who cared did this it won't help. Only a radical restructuring of society and the economy can save us.
So what can we do? What we need to do is to elect politicians committed to a restructuring of the economy and society to a degree consonant with the problem. Not just Democrats; AOC Democrats, not Biden Democrats. (Along those lines: go to marches. Sign petitions. Give money. Make sure Jay Inslee is in the debates, at least.)
How do we do this? The only thing I know of, broadly, is to change the way people think. The best thing to do, I suppose, would be to find conservatives you know and convert them. That's tough, though. Second best? Try to convince liberals you know to treat the problem with the seriousness that is its due.
That's why I post on it all the time. If enough of us get that this is an emergency, one that will need to be solved by greater-than-WW2 style mobilization starting yesterday, then maybe, *maybe*, we can overcome this.
So talk about it, as often as you can stand or more. Be that annoying person who always points out that the house is on fire. And get everyone you know to talk about it.
If enough of us talk, if enough of us listen, then we won't be individuals any more, but a collective. And then maybe we can do something that can help.