If you shut your eyes and notice things going on in your head, chest, and other parts of your body, you are introspecting. Some people are very good at this and will immediately understand exactly what I mean by it. Others won't understand, either because they don't like to introspect for one reason or another or because they don't understand the idea. Perhaps it isn't their nature to turn inward. For some, Introspection is natural, and, for others, it feels difficult or even unnatural.