obsess
US /əbˈses/
UK /əbˈses/

1.
ossessionare, fissarsi
to be preoccupied with or haunted by a particular thought, idea, or feeling
:
•
He tends to obsess over small details.
Tende a ossessionarsi per i piccoli dettagli.
•
Don't obsess about what others think.
Non ossessionarti su ciò che pensano gli altri.