I'd just like to point out, as a person who was not diagnosed with any particular kind of disorder (and boy, did my family try to make that happen when I wouldn't change my interests to meet their expectations,) that all of this advice is good advice for anyone. Everyone.
It may be more critical for someone with ADHD, but, even so, it's an outline of habits common to effective people. And frankly much of it is a great expression of what it means to be human (change your environment, delegate your efforts, planning and scheming, etc.)
Absolutely true, certainly executive functions are energetically "expensive", and very tiring to exercise continuously, regardless of neurological quirks. People also often have a lot more trouble with executive functioning than they think - as an example, checklists vastly improve the performance of even virtuoso experts at complex tasks.
It may be more critical for someone with ADHD, but, even so, it's an outline of habits common to effective people. And frankly much of it is a great expression of what it means to be human (change your environment, delegate your efforts, planning and scheming, etc.)