I wasn't sure what to name this section. These books cover how you can make it much more likely that your designs will be commercially successful.
Badass: Making Users Awesome
Full of character, and very entertaining. Kathy reveals that the secret to product success is making your users feel like they're awesome.
The Right It: Why So Many Ideas Fail and How to Make Sure Yours Succeed
This book introduces the concept of "pretotyping", which is prototyping before you have any working code. Alberto gives us a set of easy methods to find out whether a product is going to be as successful as we hope it will be.
Competing Against Luck: The Story of Innovation and Customer Choice
Clayton invented the "Jobs to be done" theory, and this book is his introduction to the concept. It's a way of thinking, and a set of methods, to find out how a business can innovate successfully and more reliably.