obsess over (something)

Translations
зацикливаться на (чём-то)
She tends to obsess over small details.
Она склонна зацикливаться на мелочах.
Definitions
To think about or focus on something excessively or compulsively, often to the point of distraction or anxiety.
Words
obsess

verb
зацикливаться
obsess over

verb
зацикливаться