burn oneself out 身心俱疲;
例如:It's great to be a hard working and wanting to have success in your life but if you burn yourself out you will not be able to enjoy the benefits of your labour.
如果你努力工作,想要在你的人生中拥有成功,这当然很不错,但是如果你把自己弄得身心俱疲,你就无法享受你的劳动成果。
burn oneself out也用来表示对某事的倦怠,例如对工作或职业:
There is always a chance that athletes will burn themselves out unless they take time off away from the sport.
总有可能运动员们会感到倦怠,除非他们能稍事休息。