Introspective (adjective)

1. Tending to examine one's own thoughts and feelings.
2. Inclined to look within oneself in order to understand one's own thoughts and emotions.

Origin:

From the latin word intro- (within) + specere (to look at).

Examples:

1. She was an introspective person who often took time to reflect on her own thoughts and feelings.
2. He was introspective and spent a lot of time thinking about his own thoughts and motivations.
3. The introspective nature of the book made it a powerful tool for self-reflection.
4. She was known for her introspective and reflective approach to life.
5. The introspective nature of the music helped listeners to connect with their own emotions.