The Kama Sutra of Vatsyayana
by Vatsyayana

The Art of War
by Sunzi 6th cent. B.C.

The Prince
by Niccolò Machiavelli

How to Analyze People on Sight / Through the Science of Human Analysis: The Five Human Types
by Elsie Lincoln Benedict

FocusFree
by Leo Babauta

The Art of Public Speaking
by Dale Carnegie

Above Life's Turmoil
by James Allen

Giving presentations - OpenLearn - The Open University
by The Open University

Essay and report writing skills - OpenLearn - The Open University
by The Open University

Explore your blind spot
by Tom Stafford

James Allen
by James Allen

How To Stop Worrying And Start Living
by Dale Carnegie

Power Of Positive Thinking
by Norman Vincent Peale

The Law of Success in Sixteen Lessons
by Napoleon Hill

Success Through A Positive Mental Attitude
by Napoleon Hill