I read the book and can't remember anything about it except the first chapter where James describes an accident he was in. Tiny Habits, from the man who created Behavioural Science, is much more concrete, doable and memorable: https://tinyhabits.com/
You, like me, probably have OCD (obsessive compulsive disorder). Get on some medication, even for a short while, and get your life back. Especially if you have a family. Don't lose your marriage over this. I'm speaking from experience.