overidentification
/ˌəʊv(ə)rʌɪˌdɛntɪfɪˈkeɪʃn/Chiefly Sociology and Psychology
noun
The action of identifying oneself to an excessive degree with someone or something else, especially to the detriment of one's individuality or objectivity.
Origin
1930s; earliest use found in Journal of Educational Sociology. From over- + identification.