Many kids with ADHD- Inattentive or combined type or nonverbal learning disabilities, for example, have deficits with executive functioning skills. This concept is “used by psychologists and neuroscientists to describe a loosely defined collection of brain processes that are responsible for planning, cognitive flexibility, abstract thinking, rule acquisition, initiating appropriate actions and inhibiting inappropriate actions, and selecting relevant sensory information (see Wikipedia for more https://en.wikipedia.org/wiki/Executive_functions).”
A great book for developing executive functioning skills is: Smart but Scattered: The Revolutionary “Executive Skills” Approach to Helping Kids Reach Their Potential by Peg Dawson and Richard Guare. This book looks at the following: building response inhibition; enhancing working memory; improving emotional control; strengthening sustained attention; task initiation; promoting, planning, and prioritizing; fostering organization; time management; flexibility; increase goal-directed persistence, and cultivating metacognition.
You can find this book at Amazon or Chapters Indigo. Well worth it, for adults and kids alike!