text: Q:
  
  Searching for specific anthology show
  
  I remember watching a lot of horror/suspense anthology shows in the 90s but one I can't remember sticks out in my mind prominently.
  In the episode a woman is getting help from a psychologist to block out an alternate personality that exists inside of her mind (which is represented physically in the show). The psychologist teaches her to build a wall inside her mind to trap the alternate personality but ultimately the strategy backfires and the, for want of a better term, "good personality" is trapped behind the wall instead.
  I believe the show was in color.
  Unfortunately Google keeps turning up actual cases of mental disorders when I try to find this so I am hoping some other avid-watcher of anthology shows recognizes this description and can help identify the show/episode.
  
  A:
  
  Sounds suspiciously like "Night Visions", episode "Switch".
  
  anthology series from 2001
  woman with multiple personalities tries to erase the other personalities  
  in the end she gets trapped in her own mind behind a wall and the evil personality takes over
  
  