Interiorization

Interiorization is the process of making things such as skills, attitudes, thoughts, and knowledge a part of one's own being. Essentially, it is what is colloquially known as "knowing something by heart" or being "second nature." Used interchangeably with the term internalization, an example would be driving a car or working with familiar equipment. These are tasks that require a great deal of effort and concentration when first being learned but seem extremely easy as experience is gained.