I disagree. Both books suck for procrastinators/people with ADHD. Most of them won't finish reading these books. People should watch a 10/20-minute introduction to developing a habit on YouTube instead.
These books are written to sell, not to be read by the target audience. They're far too long, and their structure is bad. For dozens of pages, there is no actionable advice. The reader loses interest by that time, and the book lands on Tsundoku tower. I suspect short self-help books don't sell well, so each book must have 200+ pages, even if it sets up the reader for failure.