This is a big weakness of many, many folks. Knowing when to work hard(er) and when to take time to recover is important in pursuits both mental and physical. You see it all the time in sports(e.g. overtraining) and careers (e.g. the father who spends his nights at work and misses his kids' events).
Might be a tongue cheek comment, but I built my practice around this idea. If you're going to do deep thinking work 48 weeks a year, you simply can't do it effectively 40 hours a week. Even a machine needs maintenance down time.
Maybe working less hard on higher impact things would be better. Or maybe you'd be more creative if you didn't work so hard.
It's definitely worth exploring.