People:
Please Understand Me II - David Keirsey
No Rules Rules - Reed Hastings
Mindset - Carol Dweck
Work Rules - Laszlo BockStrategy:
Start With Why - Simon Sinek
Crossing The Chasm - Geoffrey Moore
The Innovators Dilemma - Clayton Christensen
Zero To One - Peter Thiel
Competitive Strategy - Michael E. Porter
Made to Stick: Why Some Ideas Survive and Others Die - Chip Heath & Dan HeathLeadership:
The Five Dysfunctions Of A Team - Patrick Lencioni
Good To Great - Jim Collins
The Balanced Scorecard - Robert Kaplan & David Norton
The Hard Thing About Hard Things - Ben Horowitz
Blue Ocean Strategy - W. Chan Kim & Renee Mauborgne
The Subtle Art Of Not Giving A F*ck - Marc MansonEffectiveness:
The Seven Habits Of Highly Effective People - Stephen Covey
Scaling People - Claire Hughes Johnson
Influence - Robert Cialdini
Effortless - Greg McKewon
The Design of Everyday Things - Don Norman“Books are, I find, the best provisions a man can take with him on life’s journey.” - Montaigne
Sales:
The Challenger Sale - Matthew Dixon & Brent Adamson
Let’s Get Real or Let’s Not Play - Mahan Khalsa & Randy Illig
SNAP SELLING - Jill Konrath
The Checklist Manifesto - Atul Gawande
MEDDICC - Andy Wyhte
Getting Past No - William Ury
Essentials Of Negotiation - Roy J. Lewicki & Bruce Barry
Thinking, Fast and Slow - Daniel Kahneman 
Building a Second Brain - Tiago Forte
Sales Enablement 3.0: The Blueprint to Sales Enablement Excellence - Roderick Jefferson
Sales Enablement: A Master Framework to Engage, Equip, and Empower a World-Class Sales Force - Byron Matthews & Tamara Schenk 
Building Successful Partner Channels - Hans Peter BechCybersecurity:
CISSP Certification Exam Guide - Shon Harris
The Art Of Deception - Kevin Mitnick
Secrets & Lies - Bruce Schneier
Sandworm - Andy Greenberg
Cult Of The Dead Cow - Joseph Menn
Practical Cryptography - Niels Ferguson & Bruce Schneier
Playing To The Edge - Michael V. Hayden
Cyber War - Richard A. Clarke
The Assault On Intelligence - Michael V. Hayden
NIST 800-53: Security & Privacy Controls for Information Systems and OrganizationsNIST SP 800-171: Protecting Controlled Unclassified Information
ISO 27001 - Information Security, Cybersecurity and Privacy Protection
CISA - Identity, Credential, and Access Management
(ICAM) Reference Architecture
NIST SP 1800-35 - Implementing a Zero Trust Architecture - Privileged Access Management
Security Engineering: A Guide to Building Dependable Distributed Systems - Ross AndersonQuotes:
"I just sit in my office and read all day.” - Warren Buffett
“There is no better teacher than history in determining the future. There are answers worth billions of dollars in a $30 history book.” - Charlie Munger
“Vision without action is merely a dream. Action without vision just passes the time. Vision with action can change the world.” - Joel Arthur Barker Ratcliffe