First we must blame ourselves. We won't go far if we avoid that.

I'd disagree with that too. Lots of recent psychological research has shown that blaming & shaming does not work - it makes people (including yourself) shrink away from the problem, because the experience of being blamed is uncomfortable and as much as our conscious mind may tell ourselves to "embrace discomfort because we deserve it", the unconscious mind recoils.

A better perspective is to accept that this is how things are and that we have the ability to change it into something better, and then take that as a call to action to search for what that "something better" might be.

That's obviously false because once I self admit that I was a big contributor to climate change and started blaming myself for it, I completely changed my way of life, for good.

Why would you change if you are not to blame? And how can you convince/encourage others to change if you don't do it yourself first?

Maybe "shrinking away from the problem" is a good think when the problem is excessive consumption / pollution. Being uncomfortable is necessary sometimes, otherwise you can't experience the reality of the problem (we're killing us, yes, it's uncomfortable, for sure). Your better perspective seems to be wishful thinking. Just say things as they are, accept some temporary discomfort and act to make things better from there.

Someone else did not blame you, you made the choice for yourself.

You call it blame, but that's the wrong word.

> Edit: I spent a lot on a tiny flat just to live in a dense city so I can bike to work and heat my place as little as possible.

That didn't help anything though. If you didn't get that flat, someone else would have. In the net you made no change at all.

> I can't do much more to limit CO2 emissions actually

Isn't that kind of the point the person you are replying to is making? You can't do anything else, and the one thing you did do, didn't even help.

> but I'm certain that those who make $180k to do haircuts because fracking are responsible one way or another.

And you don't see how this kind of attitude makes things worse? This is a system issue, not an individual one. If any individual (even a huge number of them) decided "I won't", someone else will, so their action did nothing whatsoever.

This isn't going to change at the individual level.

The person you are replying to has the correct idea: Change things so that naturally everyone switches to the better behavior, without blaming or saying "your fault".