Start with high-confidence time management books, then narrow by subgenre or adjacent topics.
Getting Things Done
David Allen
Attention Span
Gloria Mark
18 Minutes
Peter Bregman
Redeeming Your Time
Jordan Raynor
The PLAN
Kendra Adachi
Organizing Solutions for People With ADHD, 3rd Edition
Susan Pinsky, Susan C. Pinsky
No B.s. Ruthless Management of People and Profits
Dan S. Kennedy, Mike Chamberlain
Eat That Frog!
Brian Tracy
How to Live on 24 Hours a Day
Arnold Bennett, Jim Roberts
The ONE Thing
Gary Keller, Jay Papasan
Lifestyled
Shira Gill