Answer:
This question is incomplete, but from what I can find online, you are referring to the definition of introspection.
Explanation:
Introspection is an act of self-awareness that involves thinking and analyzing your own thoughts and behaviors, being one of the defining characteristics of the human being.
We are naturally curious about ourselves. We repeat our own experiences and actions in the hope of understanding who and how we are, but the term is also used to refer to an experimental technique that consists of analyzing one's thoughts and feelings in a structured and rigorous way. Therefore, when we speak of introspection, we may be talking about the informal process of reflecting on oneself or the formal method used in experimental research in psychology many years ago.