Not my OC but what I've believed for years: there's no conflict between reducing your own environmental impact and holding corporations responsible. We hold corps responsible for the environment by creating a societal ethos of environmental responsibility that forces corporations to serve the people's needs or go bankrupt or be outlawed. And anyone who feels that kind of ethos will reduce their own environmental impact because it's the right thing to do.
Thoughts?
Staying informed so you can actually vote effectively is a constant effort too. Especially if you actually participate in the primary process and local elections. You just don't see that as a constant effort because it's something you already do. It's an ingrained part of your routine and habit.
Similarly, I don't see reducing my consumption as a constant effort, because it's something I already do. I eat less meat, I use less plastic, I buy less junk than I used to. It took a bit of adjustment at first, sure. But now it's just something that I do.