There is a important difference between critical thinking and being critical. Knowing that difference can be the deciding factor in whether you are successful at affecting change or become an ineffectual aggravating irritant.
Now that I have your attention…it will come as no surprise to learn I have a tendency to critique almost every aspect of the world around me. Don’t get too excited about the admission, however. You probably do the same thing. We all do. It’s human nature.