This is one of the most accessible books on mathematics that you'll read. The book covers most fields of math with good depth. All the concepts are laid out in layman terms. You end each chapter feeling smarter with more useful abstract concepts. I would read this book in spurts rather than one go. Much like other dense-but-readable nonfiction, it's good to let the information digest over many meals rather than one meal.

I also would consider having a pencil and paper just to write out your own thoughts as you read the book. That will help the concepts stick and turn things like Euclidean geometry into words that are yours. The book makes these themes easy, themes like the Concordet paradox. You will enjoy reading about it. You will enjoy even more when you add your own flavor text with pencil and paper.

The tl;dr on how not to be wrong is essentiality to be OK with uncertainty. So be OK being only 80% confident you're right when you make a decision. Don't fall into the bravado trap of action always beating inaction, and don't fall into the paranoia trap of overanalyzing before acting.