Taking Charge of Adult ADHD ~ Dr. Russell Barkley
If you want to get a deep understanding of how ADHD affects people and solutions for dealing with it, the book by THE preeminent doctor on the subject is this one.
Trying Hard To Stop but it’s not working
As someone with ADHD, I subscribe to a bunch of ADHD-related content. HowToADHD is one of my favorites. So when I watched this video, even though it was directed at people with ADHD it's completely relevant to anyone with addictive behaviors too.