serve somebody right 自作自受
A：Would you please find me another job, Dad?
B：What’s wrong with your job?
A：I’ve lost it.
B：I once told you to work hard, but you always turned a deaf ears to me.
It serves you right.
A：爸爸，能请您为我另找份工作吗？
B：你的工作怎么了？
A：我丢了这份工作。
B：以前我告诉过你要努力工作，但你总是当耳边风，你这是自作自受。