Other screaming voices: learning which meetings you can skip (and how frequently), learning which emails you can ignore, learning what can be dropped without too much consequence, learning which 'emergency' requests can be deferred (as they will probably be overcome by events anyway), effectively delegating instead of micromanaging.
Basically, learn to stop sweating the small stuff.
constructively reacting to stress
As people grow up, they can learn to control their emotional response, or at least learn non-destructive coping mechanisms. (For instance, leaving an argument alone until both parties have calmed down enough to think about what’s really at stake in the argument and what’s important and come up with solutions that both can agree to.) They can learn the true causes of their stress, and try to fix those, instead of blaming unrelated people or events.
Second, inserting a pause between your immediate reaction and your response allowing yourself time to moderate and change it.
Finally, recognizing that your reaction is an indicator of stress and then doing whatever it is that makes you less stressed. Exercise, vacation, reading, etc.
I imagine there are some ways to become more efficient at these things -- especially e-mail. The way he writes it sounds as if these are fixed burdens. You can get creative with them.
How did you manage to do this?
Imagine you are stuck in a room with 10 screaming people. You could expend a bunch of effort and get one of the people to stop screaming, but this hardly seems worth the effort. There will still be 9 people screaming, and now you will be too exhausted to work on your own projects. Instead you devote a little effort to learning how to deal with the screaming while you get your work done.
THIS IS A MISTAKE.
It is a mistake because getting that person to stop screaming is a permanent improvement upon your situation. Getting the first person to stop screaming has very little utility, but the next one is easier AND makes an even bigger difference. The next one even more so, etc. By the time you get down to only 2 or 3 screaming people you are amazed at all the new things you can hear. You can almost hear yourself think!
When you work on things that give yourself more capability you are making permanent stackable improvements. By the time I had fixed the loudest screaming voices of nutrition, sleep, exercise, and constructively reacting to stress, I couldn't even recognize the person I used to be.