I believe this book will help you move toward your goal.
From my experience, most of the CIOs/CTOs that I interact with are nearly flawless in their soft skills.
One of the things I did a few years ago to help work on my soft skills was to enroll in the Management of Technology program at the University of Minnesota. It’s a split degree between technology and business. It helped me gain a better sense of strategic management, writing, presenting, and the financial side of the business (I gained a much better appreciation for terms like ROI – Return on Investment, …). It also inspired me to want to write this book.