...Do you think about your own thoughts? Then yes, you metacognate.
Metacognition changed my life, or I should say that it changed my way of thinking and my worldview. Like most people I had grown up to become a product of the various environments I lived in. Most of my beliefs on religion, politics, ethics, etc., were simply reflections of pop rhetoric--sound bites and talking points that I had heard others say on television or in a barbershop or things that my parents had instilled in me that were passed down to them or that they had adopted. They made sense and there wasn't much push-back, so I adopted them as well. I lived in a world where these beliefs were bought wholesale and accepted, so they rarely faced a challenge. The few times they did face challenges, it was often easy to be dismissive. After all, this person was arguing against the well-accepted and well-established truth of my position; they had the burden of proof on their shoulders. Because they were the only crazy person to see things that way, that must mean that they are wrong, right? At least that was my justification for dismissing them.