The time to relax is when you don’t have time for it
— Sydney J. Harris, 1917-86 (Journalist for the Chicago Daily News and later the Chicago Sun-Times.)
Although it may sounds counter-intuitive, it does make some sense. If you are so pressured that you have no time to spare, then that is when taking even a moment to relax may give you the greatest gain from relaxing.
You may like believe that you’ve super-human endurance, and you may have. Most of us eventually get tired, and carelessness, and inefficient. What normal takes an hour, is now taking two and we still don’t do it well. Take a break, take some time off. You might find you’ll do a better job and in less time, even with the break. You’ll also find that in the long run you’ll be less stressed, and able to do more anyway.