思おもい過すごす

godan verb (-su), transitive verb

overthink; worry too much about; make too much of

Used when someone dwells on something excessively, often needlessly worrying or reading too much into a situation.

• 彼かれは小ちいさな失しっ敗ぱいを思おもい過すごして、夜よるも眠ねむれなかった。

  He overthought a small mistake and couldn't sleep at night.

• そんなに思おもい過すごさなくても大だい丈じょう夫ぶだよ。

  You don't need to worry so much about it; it's fine.