Self-improvement

The Etiquette of To-day

Edith B. Ordway

The Gentlemen's Book of Etiquette and Manual of Politeness
Being a Complete Guide for a Gentleman's Conduct in All His Relations Towards Society

Cecil B. Hartley

A Mind That Found Itself: An Autobiography

Clifford Whittingham Beers

The Go-Getter: A Story That Tells You How to be One

Peter B. Kyne

The Golden Censer
Or, the duties of to-day, the hopes of the future

John McGovern

The Secret of a Happy Home (1896)

Marion Harland

Poise: How to Attain It

D. Starke

Golden Steps to Respectability, Usefulness and Happiness
Being a Series of Lectures to Youth of Both Sexes, on Character, Principles, Associates, Amusements, Religion, and Marriage

John Mather Austin

The Joyful Heart

Robert Haven Schauffler

Stray Thoughts for Girls

Lucy Helen Muriel Soulsby

Happiness and Marriage

Elizabeth Towne

The Art of Public Speaking

Dale Carnegie

A Woman of the World: Her Counsel to Other People's Sons and Daughters

Ella Wheeler Wilcox

Success (Second Edition)

Baron Max Aitken Beaverbrook

The Ladies' Vase; Or, Polite Manual for Young Ladies

American lady

Cheerfulness as a Life Power

Orison Swett Marden

The Human Machine

Arnold Bennett

A Message to Garcia
Being a Preachment

Elbert Hubbard

Life's Enthusiasms

David Starr Jordan

The Way of Peace

James Allen

Certain Success

Norval A. Hawkins

The Mystic Will
A Method of Developing and Strengthening the Faculties of the Mind, through the Awakened Will, by a Simple, Scientific Process Possible to Any Person of Ordinary Intelligence

Charles Godfrey Leland

Laugh and Live

Douglas Fairbanks

Little Essays of Love and Virtue

Havelock Ellis

Supreme Personality: Fun in Living. A Doubt, Fear, and Worry Cure

Delmer Eugene Croft

Advice to Young Men
And (Incidentally) to Young Women in the Middle and Higher Ranks of Life. In a Series of Letters, Addressed to a Youth, a Bachelor, a Lover, a Husband, a Father, a Citizen, or a Subject.

William Cobbett

A Series of Lessons in Raja Yoga

William Walker Atkinson

Common Sense, How to Exercise It

Yoritomo-Tashi

Quit Your Worrying!

George Wharton James

Love, Life & Work
Being a Book of Opinions Reasonably Good-Natured Concerning How to Attain the Highest Happiness for One's Self with the Least Possible Harm to Others

Elbert Hubbard