fixate

verb4

1. •
   To attend to something to the exclusion of all others.

   • He needed something to fixate on now that the repainting was done. — 2020
2. •
   To attach oneself to a person or thing in a pathological, neurotic, or obsessive manner.
3. •
   To stare fixedly at something.
4. •
   To make something fixed and stable; to fix.