What more power beyond, say, recycling and using public transportation can an individual person have? Note how this narrative is literally shifting the blame from corporations, industries, and governments to individual people. "It's your fault you're not doing enough".
Meanwhile, Germany alone, thanks to the actions of its government, is responsible for more carbon emissions on a single night than I can even theoretically reduce over a milion lifetimes.
They shut down their nuclear reactors, and right now even on a windy night they burn coal and gas to make up for the difference: https://imgur.com/a/3bYudyd