None of these are design-specific, but some great leadership books off the top of my head: Radical Candor, The Hard Thing About Hard Things, The One Minute Manager, High Output Management, It Doesn’t Have to be Crazy at Work
Totally agree! Learning is fundamental to our profession because the skills required change so quickly. The only way you can continue to add value and do great work in your career is to constantly improve. Whether it’s coding, research, animation, or whatever your strongest interest is.