There were a couple threads like that and from them I have scoured an interesting list ( minus what was already posted ) which is I am progressively trying to get through.
The Power of Now – Eckhart Tolle
A New Earth – Eckhart Tolle
The Personal MBA – Josh Kaufman
Leadership Mastery – Dale Carnegie
Emotional Intelligence - Daniel Goleman
Rich Dad, Poor Dad - Robert Kiyosaki
No Excuses - Brian Tracy
The Power of Habit - Charles Duhigg
Influence: The Psychology of Persuasion - Robert Cialdini
Made to Stick - Dan & Chip Heath
Switch: How to Change Things When Change is Hard - Dan & Chip Heath
Flow: The Psychology of Optimal Experience - Mihaly Csikszentmihalyi
Decisive: How to Make Better Choices in Life and Work - Dan & Chip Heath
Awaken the Giant Within - Anthony Robbins
Unlimited Power - Anthony Robbins
The Fine Art of Small Talk – Debra Fine
Thinking Fast and Slow - Daniel Kahneman
Magic Bullets 2nd Edition - Nick Savoy
The Psychology of Self-Esteem – Nathaniel Branden
Objectivism : Philosophy of Ayn Rand – Leonard Piekoff
The Social Animal – Elliot Aronson
The Prince - Niccolo Machiavelli
Pitch Anything - Oren Klaf
Baltasar Gracian - Art of Worldly Wisdom
John Ransom’s Andersonville Diary
Reminiscences of a Stock Operator – Jesse Livermore
Michel de Montaigne - The Essais
Robert Greene - Mastery
Seth Godin - Icarus Deception