Let change happen through you.
Many are asking for change, but few are willing to be the one who actually makes it happen.
It's part of the daily normal to hear people complain about this or that.
Something is not good enough, someone is an idiot, the world would be better if only… etc.
We all encounter such people in our daily lives, and to be fair, there is nothing wrong with pointing out the weaknesses of life.
It shows that you are aware of the fact that life could be better, and that you are not just following along.
It also shows that you have a personal value, which you are willing to put on the line. At least in words.
The big question, however, is if you are willing to act on it. If not, why complain?