There are 8 Laws of Focus and one of them is the Law of Tradeoffs.
As David Allen said, you can do anything but you cannot do everything. In order to give your perpetual devotion to any one thing it will require the perpetual neglect of many other things. Focus, therefore, requires tradeoffs.
You can only focus on so many things at a time. And you can only focus for so many hours during the day. Instead of ignoring the limitation on your energy, embrace it and find ways to routinize and automate the non-trivial areas of your life so that even when you are not giving them your full attention and devotion, they are not being fully neglected.