You can take time off and you must take time off. But when you take time off the young upcoming prospects are going to gain on you. So what do you do?
What you do is make sure you’re doing good work and you are 100% focused on doing that good work when you’re on. Sprint as hard as you can for as long as you can and then rest.
The more you sprint, the more you build working endurance and you’ll be delighted with how much you get done.