not hack it

to be unable to work or deal with something effectively Most people think he just can't hack it in this business anymore.

Name	Pronounced	Usage
Orpha	AWR-fə (English)	Biblical, English
Rupert	RUY-pərt (Dutch), ROO-pərt (English), RUW-pert (Polish)	German, Dutch, English, Polish
Abd Al-Rashid	-	Arabic
Jerome	jə-ROM	English
Proctor	['prɔktə]
Shyla	-	English (Modern)