run yourself into the ground
run (oneself or something) into the ground
1. To work oneself to the point of illness or exhaustion. If you keep working 80-hour weeks, you'll drive run into the ground sooner than later.
2. To destroy something or cause it to break down. If you would just remember to get your oil changed, you wouldn't keep running your cars into the ground.
3. To continue to focus on something—especially an issue or topic—that is no longer of any use or relevance. We've all moved on from that problem, so there's no use running it into the ground.
run yourself into the groundINFORMAL
1. If you run yourself into the ground, you work so hard at something that you become exhausted. While everyone else is running themselves into the ground for the whole month of December, she and I are relaxing at home.
2. If you run yourself into the ground, you run around a lot, especially while playing a game. Liverpool's young players in particular ran themselves into the ground.