Internalize (verb)

1. To make something a part of one's inner nature or psyche.
2. To take in and make a part of oneself, especially an idea or attitude.

Origin:

From the adjective "internal" which means "inside" and the verb "ize" which means "to make".

Examples:

1. He internalized the values of his parents.
2. She internalized the lessons from her experiences.
3. The child internalized the rules of the game.
4. He internalized the culture of the company.
5. The student internalized the concepts taught in the class.