Scroll past the intro, head for the strategies:
Have you tried any of these, or do you have a better method/suggestion? What works for you to keep you on track but maintaining a work-life balance?
More info on the Eisenhower Matrix:
I do my best work from 11PM - 2AM. House is quiet, everyone is sleeping and the inbox is inactive… LOL
Guess that’s the morning.
Now it’s like the 5 o’clock thingy …
You took the words right out of my mouth. I don’t do “mornings”.
-Ana
I’m up early, exercise early, at my desk early. I’m definitely better early in the day.
I start round #2 around 10 PM. Yep - I call those my “golden hours”, peaceful and quiet so I can actually think about what I’m doing.
All bets are off between 3 PM and 10 PM. I take no responsibility for anything I do during those hours …
Research has shown that historically humans have had a biphasic sleep and energy pattern (within 24ish hours), that doesn’t fit in neatly with the industrial revolution’s “workday” ideology (or the modern iteration of 9 to 5). So I think your two productivity chunks are more common than we realize!
Remember, both Churchill and JFK would work in the morning, nap in the afternoon, work into the late evening, sleep for a bit, and then start it all over. Churchill said it was how he got extended workdays compared to average 9-5 workers (or something like that). Churchill also started his morning work from bed, in his PJs, by checking in with staff, dictating correspondence, getting updates, etc, all while he breakfasted, bathed, and readied himself to go to his office or meetings.
As far as what the article recommended, what’s important is finding a sleep/energy workplace best fit for your own specific sleep/energy patterns, and then building a sustainable productivity routine.
The world would be (more?) doomed if it depended on me being awake, alert, and/or active for any constant 8-hour period, or soundly asleep for 8 consecutive hours! 
By the time I get around the conceptualizations and fancy formulations - Ima be having a midlife crisis or two…I laze around and work in tiny intense spurts and then laze around - eat, sleep, read, supplement, rave, repeat…