“All human activity is subject to habitualization. Any action that is repeated frequently becomes cast into a pattern, which can then be reproduced with an economy of effort and which, ipso facto, is apprehended by its performer as that pattern. Habitualization further implies that the action in question may be performed again in the future in the same manner and with the same economical effort”

(Berger and Luckmann 1967:70–71). Peter, and Thomas Luckmann. 1967. The Social Construction of Reality: A Treatise in the Sociology of Knowledge. Garden City, NY: Anchor.