We have limits of time and energy.
But energy is more of a finite resource than time.
We have 24 hours during the day, but only 4 of those are of deep work because of energy.
So be very aware of time but organize your life around energy.
1. Do things in the morning.
2. Do the most important things first.
Follow this and your working hours will be more fruitful and you will get more done in the longterm.