💸 Earn 25% on every upgrade — refer Sumizeit and get paid for every reader you bring in

Join & Start Earning →

Self Development Book Summaries

Every Self Development summary on Sumizeit, distilled into a 10-15 minute read, listen, or watch — with quizzes and exercises to help the ideas stick.

Search
Never Split the Difference book cover
📚 Free Daily Read

Never Split the Difference

Chris Voss & Tahl Raz

Never Split the Difference teaches negotiation through empathy and control.

Read Now — It’s Free

Browse Books

Happier book summary
Happier

By Tal Ben-Shahar

ADHD Is Awesome book summary
ADHD Is Awesome

By Penn Holderness

Good Morning, Monster book summary
Good Morning, Monster

By Catherine Gildiner

Wintering book summary
Wintering

By Katherine May

Calm the Fck Down book summary
Calm the Fck Down

By Sarah Knight

First Things First book summary
First Things First

By Stephen Richards Covey

The Science of Getting Rich book summary
The Science of Getting Rich

By Wallace Delois Wattles

Your Next Five Moves book summary
Your Next Five Moves

By Patrick Bet-David

As a Man Thinketh book summary
As a Man Thinketh

By James Allen

Discipline Is Destiny book summary
Discipline Is Destiny

By Ryan Holiday

The Happiness Project book summary
The Happiness Project

By Gretchen Rubin

The Power of Positive Thinking  book summary
The Power of Positive Thinking

By Norman Vincent Peale

How to Be Single and Happy book summary
How to Be Single and Happy

By Jennifer Taitz

The Inner Game of Tennis book summary
The Inner Game of Tennis

By W. Timothy Gallwey

The Defining Decade book summary
The Defining Decade

By Meg Jay, PHD

The Art of Happiness book summary
The Art of Happiness

By Dalai Lama

Love Is the Killer App book summary
Love Is the Killer App

By Tim Sanders

How to Take Smart Notes book summary
How to Take Smart Notes

By Sönke Ahrens

Anything You Want book summary
Anything You Want

By Derek Sivers

Meditations for Mortals book summary
Meditations for Mortals

By Oliver Burkeman