obsess
/əbˈsɛs/
verb
- To think about someone or something all the time, in a way that is not normal or healthy.
- He obsesses about his favorite video game, playing it every spare moment.
- She tends to obsess over small mistakes she made years ago.
- Don't obsess over what other people think of you.
- To cause someone to think about something constantly and excessively.
- The mystery of the missing painting obsessed the detective for months.
- The idea of traveling to space obsessed him since childhood.
- Her fear of failure obsessed her, keeping her awake at night.