T. has a one-track mind. He is a school psychologist who thinks that the solution to all teenage special learners' problems is for the teen to attend all his planning meetings with school personnel. He is so stuck on this idea that he can't even recognize when the parents are already allowing and encouraging the teen to take an active role in the family's advocacy efforts.

What can I call the thing the one-track-minded person is stuck on? It's an idée fixe but I often have to communicate with people who are unlikely to understand idée fixe. I end up calling it T.'s thing. Strictly speaking it is an obsession but this give offense.

Example sentence:

T.'s _________ is that teens should attend their own meetings and advocate for themselves.

I don't mind recasting if it helps me communicate with an unsophisticated audience.

Edit: I think Lee Leon cracked it:

T. feels it's his mission to get teens to attend their own meetings and advocate for themselves.

  • 2
    Fixation. Or obsession or other synonyms you can find in a thesaurus starting here. – Dan Bron Nov 29 '17 at 14:23
  • @DanBron - Thing has a more neutral tone than fixation. Granted, fixation is a bit more neutral in tone than obsession, but I'd prefer something as neutral as thing. – aparente001 Nov 29 '17 at 15:03
  • Then try focus, objective, aim, and so forth. – Dan Bron Nov 29 '17 at 15:48
  • @DanBron - Thanks for the suggestions, but for me, those don't imply one-track-mindedness. Do they for you? – aparente001 Nov 29 '17 at 15:50
  • Focus does. Even in its imagery. – Dan Bron Nov 29 '17 at 15:51

I suggest quest or mission. if you want to make it one-track try something like:

T.'s sole mission is that teens should attend their own meetings and advocate for themselves.

protected by tchrist Dec 1 '17 at 15:47

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