What this all means is that anything which can keep one from being aware of "me," with all the good or even bad that that entails, can open up the gates to behavior change and experimenting with alternative selves. At the extreme end of this is the dissociative reaction, sometimes called Multiple Personality Disorder (not to be confused with schizophrenia, which is unrelated to MPD), sometimes seen as a fugue state. In both instances, a person represses parts of their personality and only expresses those parts as a separate identity, sometimes with horrendous consequences as when the repressed and meek Dr. Jekyll became the murderous, id-dominated Mr. Hyde (or Jerry Lewis's update of the Jekyll-Hyde story, The Nutty Professor, wherein a nerd, Julius Kelp, transforms into the brash, self-glorifying alter ego, Buddy Love). Sometimes, dissociative states can eventually work out to the good, as in the classic (and my favorite) 1942 film, Random Harvest.