burn oneself out

• (因过分操劳或生活放纵而)筋疲力尽(或损害健康，衰弱)；耗完，耗尽：

  She burned herself out with a life of aimless dissipation.

  她毫无目的地过着放荡生活，把身体搞垮了。

  She feared that he would burn himself out or break down.

  她担心他会累垮或变得衰弱。