Real Dictionary

internalize
verb: If you internalize something such as a belief or a set of values, you make it become part of your attitude or way of thinking.

internalize in American English
to make internal; interiorize; specif., to make (others', esp. the prevailing, attitudes, ideas, norms, etc.) a part of one's own patterns of thinking
transitive verb: to incorporate (the cultural values, mores, motives, etc., of another or of a group), as through learning, socialization, or identification

internalize in British English
verb: to make internal, esp to incorporate within oneself (values, attitudes, etc) through learning or socialization