Below is an ever growing list of books that I and/or other bloggers on this site have read. Some books exist in more than one category.
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Business Tactics

• The Inevitable  by Kevin Kelly
• The Consulting Bible by Alan Weiss
• The Education of Millionaires by Michael Ellsberg
• Zero to One by Peter Thiel
• Dotcom Secrets by Russell Brunson
• Power Branding by Steve McKee
• The 4-hour Work Week by Timothy Ferriss
• Tools of Titans by Tim Ferriss
• Rich Dad, Poor Dad by Robert Kiyosaki
• The Art of The Deal by Donald J. Trump
• Nudge by Richard H. Thaler and Cass R. Sunstein
• #ASKYGARYVEE by Gary Vaynerchuk
• The Happiness Equation by Neil Pasricha
• Subscription Marketing by Anne H. Janzer

Charisma & Confidence

• Never Eat Alone by Keith Ferrazzi
• The Charisma Myth by Olivia Fox Cabane
• Four Seconds  by Peter Bregman
• The Obstacle is The Way by Ryan Holiday
• What Makes your Brain Happy and Why You Should Do The Opposite by David DiSalvo
• You Are A Bad Ass by Jen Sincero
• Pitch Perfect by Bill McGowan
• The Happiness Advantage by Shawn Achor
• 10X and Sell or be Sold by Grant Cardone
• How to Win Friends and Influence People by Dale Carnegie
• The Happiness Equation by Neil Pasricha

Meditation & Zen

• The Productivity Project by Chris Bailey
• Four Seconds by Peter Bregman
• How to Train a Wild Elephant by Jan Chozen Bays
• The Happiness Advantage by Shawn Achor
• Tools of Titans by Tim Ferriss

Mind Mastery

• What Makes your Brain Happy and Why You Should Do The Opposite by David DiSalvo
• Tools of Titans by Tim Ferriss
• Top Dog by Po Bronson and Ashley Merryman
• Nudge by Richard H. Thaler and Cass R. Sunstein
• Riveted by Jim Davies

Networking & Career Skills

• The Education of Millionaires by Michael Ellsberg
• Never Eat Alone by Keith Ferrazzi
• Tools of Titans by Tim Ferriss
• Pitch Perfect by Bill McGowan
• The Art of The Deal by Donald J. Trump
• The Charisma Myth by Olivia Fox Cabane

Philosophy
NOTE: these books are based, in their entirety, around a specific philosophy, or written by known philosophers of the past. Various Philosophies can be found in several other books listed above/below

• The Shortness of Life by Seneca
• Meditations by Marcus Aurelius
• Man Alone With Himself by Friedrich Nietzsche
• Ego is The Enemy and The Obstacle Is The Way by Ryan Holiday
• The Daily Stoic by Ryan Holiday and Stephen Hanselman

Productivity

• The Productivity Project by Chris Bailey
• The 4-hour Work Week & Tools of Titans by Timothy Ferriss
• 10X, If You’re Not First, You’re Last, and Sell or be Sold by Grant Cardone
• The Happiness Advantage by Shawn Achor
• The Happiness Equation by Neil Pasricha

Other

NOTE: I couldn’t find a good fit for these books but find them noteworthy and well worth a read.

• Outliers, Blink, The Tipping Point, David and Goliath by Malcolm Gladwell
• Trust Me I’m Lying by Ryan Holiday
• Synchronicity by Kirby Surprise
• Cosmos by Carl Sagan
• A Random Walk Down Wall Street by Burton G. Malkiel
• Astrophysics for People in a Hurry by Neil DeGrasse Tyson