Development Theory

Product List
    • A Life-Changing Tool That Millions of People Can’t Stop Talking About
    • By: Mel Robbins
    • Narrated by: Mel Robbins
    • Length: 10 hrs and 38 mins
    • Release date: 12-24-24
    • Language: English
    • 4.5 out of 5 stars 16,028 ratings
    • In her latest groundbreaking book, The Let Them Theory, Mel Robbins teaches you how to stop wasting energy on what you can't control and start focusing on what truly matters: YOU. Your happiness. Your goals. Your life.

    Regular price: $33.90

  • Regular price: $3.99

  • Regular price: $17.19

    • A Primer
    • By: Donella H. Meadows
    • Narrated by: Tia Rider Sorensen
    • Length: 6 hrs and 26 mins
    • Release date: 07-26-18
    • Language: English
    • 4.5 out of 5 stars 2,276 ratings
    • Thinking in Systems is a concise and crucial book offering insight for problem-solving on scales ranging from the personal to the global. This essential primer brings systems thinking out of the realm of computers and equations and into the tangible world....

    Regular price: $15.59

    • Purpose Through Observation
    • By: Pejman Ghadimi
    • Narrated by: Craig Jessen
    • Length: 5 hrs and 58 mins
    • Release date: 05-10-13
    • Language: English
    • 4.5 out of 5 stars 968 ratings
    • The Third Circle Theory is the theory that explains how visionaries are made and billion dollar ideas born from nothing more than your observations....

    Regular price: $19.95

    • A New Psychology of Personal Freedom
    • By: William Glasser
    • Narrated by: John Meagher
    • Length: 12 hrs and 6 mins
    • Release date: 02-18-14
    • Language: English
    • 4.5 out of 5 stars 329 ratings
    • Dr. William Glasser offers a new psychology that, if practiced, could reverse our widespread inability to get along with one another....

    Regular price: $22.49

    • Unlock the Digital Goldmine and Get AI Working for You Fast with More than 85 Side Hustle Ideas to Boost Passive Income, Create New Cash Flow, and Get Ahead of the Curve
    • By: Alec Rowe
    • Narrated by: Shawn Isola
    • Length: 3 hrs and 47 mins
    • Release date: 03-19-24
    • Language: English
    • 4 out of 5 stars 74 ratings
    • Dive into the future of passive income with "ChatGPT Side Hustles" by Alec Rowe. This comprehensive guide unveils over 85 innovative side hustle ideas leveraging the power of AI to boost your income, create new cash flows, and secure a competitive edge.

    Regular price: $14.95

    • A Guide to Strengthening the Relationships in Your Life
    • By: Thais Gibson
    • Narrated by: LaQuita James
    • Length: 3 hrs and 36 mins
    • Release date: 05-11-21
    • Language: English
    • 4 out of 5 stars 134 ratings
    • Attachment Theory combines traditional teachings with knowledge of subconscious patterns to provide powerful tools for powerful change....

    Regular price: $11.17

  • Regular price: $9.09

    • Unlock the Secret to Enlightened Communication
    • By: David Klick
    • Narrated by: David Klick
    • Length: 4 hrs and 28 mins
    • Release date: 06-17-25
    • Language: English
    • Not rated yet
    • The Bubble Theory is a deep, transformative exploration of the energetic dance between the masculine and feminine within oneself, and how mastering this inner polarity leads to true relational harmony.

    Regular price: $14.95

    • Make More Money as a Beginner, Entrepreneur, or Business Owner with AI Chatbots & Custom Prompts
    • By: FutureFront Publishing
    • Narrated by: Devin Bradley
    • Length: 3 hrs and 49 mins
    • Release date: 07-31-23
    • Language: English
    • 5 out of 5 stars 52 ratings
    • Ready to propel your business into the AI revolution? Curious about how to harness the power of AI, even without technical know-how? Launch into a world of limitless opportunities with ChatGPT, the AI tool that's revolutionizing the landscape of business....

    Regular price: $14.95

    • La clave está en soltar [The Key Is to Let Go]
    • By: Mel Robbins
    • Narrated by: Leyla Rangel
    • Length: 8 hrs and 47 mins
    • Release date: 04-30-25
    • Language: Spanish
    • 5 out of 5 stars 19 ratings
    • Libérate de lo que no puedes controlar y céntrate en lo que realmente importa. La autora bestseller del New York Times.

    Regular price: $19.95

    • 25+ Side Hustle Ideas, How to Make Money With ChatGPT, and Work Fewer Hours
    • By: Warren Fletcher
    • Narrated by: Brad Derry
    • Length: 4 hrs and 1 min
    • Release date: 09-20-23
    • Language: English
    • 5 out of 5 stars 32 ratings
    • Enter the world where artificial intelligence meets ambitious side hustlers. ChatGPT Side Hustle Income explores the endless possibilities of ChatGPT and its ability to enhance online side jobs.

    Regular price: $8.99

    • Why Some Are So Rich and Some So Poor
    • By: David S. Landes
    • Narrated by: Walter Dixon
    • Length: 21 hrs and 47 mins
    • Release date: 07-27-21
    • Language: English
    • 4.5 out of 5 stars 60 ratings
    • Why do some nations achieve economic success while others remain mired in poverty? The answer, as Landes definitively illustrates, is a complex interplay of cultural mores and historical circumstance....

    Regular price: $25.79

    • Nervous System Regulation, Vagus Nerve Reset and Somatic Exercises for Anxiety Relief, Trauma & PTSD Recovery and Mind-Body Connection (Mind & Body Trauma Recovery)
    • By: Y.D. Gardens
    • Narrated by: Teressa Mahoney
    • Length: 12 hrs and 27 mins
    • Release date: 02-22-25
    • Language: English
    • 5 out of 5 stars 29 ratings
    • This comprehensive collection brings together two highly acclaimed books—The Somatic Therapy Handbook and The Polyvagal Theory Handbook—to provide you with a science-backed, practical path to healing from within.

    Regular price: $24.95

    • A Complete Guide to Cognitive Development, Learning Stages, and Educational Theory
    • By: The Practical Atlas
    • Narrated by: Virtual Voice
    • Length: 1 hr and 5 mins
    • Release date: 06-06-25
    • Language: English
    • Not rated yet
    • Understanding Jean Piaget: A Complete Guide to Cognitive Development, Learning Stages, and Educational Theory is your definitive introduction to ...

    Regular price: $3.99

    • Powerful Tools to Promote Understanding, Increase Stability, and Build Lasting Relationships
    • By: Annie Chen
    • Narrated by: Liz Morey
    • Length: 3 hrs and 37 mins
    • Release date: 07-08-24
    • Language: English
    • 5 out of 5 stars 2 ratings
    • The Attachment Theory Workbook is your guide to understanding your own attachment style to help you free yourself from codependency with evidence-based tools and exercises—improving honesty, intimacy, and communication with your partner, family, or close friends.

    Regular price: $27.14

    • Healing the Emotional Wounds That Sabotage our Relationships
    • By: David Richo PhD
    • Narrated by: Tom Pile
    • Length: 10 hrs and 20 mins
    • Release date: 12-09-14
    • Language: English
    • 4.5 out of 5 stars 377 ratings
    • We all have a tendency to transfer potent feelings, needs, expectations, and beliefs from childhood or from former relationships onto the people in our daily lives, whether they are our intimate partners, friends....

    Regular price: $19.95

    • A Hopeful History
    • By: Rutger Bregman, Erica Moore, Elizabeth Manton
    • Narrated by: Rutger Bregman, Thomas Judd
    • Length: 11 hrs and 37 mins
    • Release date: 06-02-20
    • Language: English
    • 4.5 out of 5 stars 2,131 ratings
    • If there is one belief that has united the left and the right, psychologists and philosophers, ancient thinkers and modern ones, it is the tacit assumption that humans are bad. It's a notion that drives newspaper headlines and guides the laws that shape our lives....

    Regular price: $25.19

  • Regular price: $21.49