The Mentorship Edge

Learn how a mentor relationship can make your life more fulfilling

The Mentorship Edge: Creating Maximum Impact through Lateral and Hierarchical Mentoring explores how we connect to others, feel valued, get pleasure from life, and believe our lives have meaning through forming mentor relationships with others. This book covers traditional hierarchical mentorship we're all familiar with, along with lateral mentoring, where you connect with a friend or colleague—someone you can be vulnerable with—whether they work in your department, another department, or outside of your organization entirely.

Insight in this book is drawn from The International Association of Top Professionals 2025 Top CEO and Mentor of the Year Deborah Heiser's experience running The Mentor Project, a nonprofit mentoring organization with more than 100 mentors at the absolute top of their fields. In this book, readers will learn about:

• The proven benefits of mentorship in both work and home life
• Mentorship in various fields, including business, research, entrepreneurship, and art
• Classic examples of the power of mentorship, like when Steve Jobs asked Steve Wozniak for engineering help when he was at Atari

The Mentorship Edge is an essential guide to demystify the special concept of mentoring and inspire individuals to engage in mentoring naturally, whether hierarchically or laterally, based on their goals and passions.

Introduction ix

1 We Are Built to Mentor 1

2 Five Key Components to Mentoring 17

3 What Mentoring Isn’t 27

4 Why We Mentor 45

5 Mentoring Styles 67

6 Mentors in Our Lives 87

7 Mentoring in the Workplace 109

8 Defining Mentoring through Research 141

9 The Future of Mentoring 157

10 Creating Culture through Mentorship 165

11 Call to Action: Finding Mentorship Opportunities 179

References 189

Acknowledgments 193

About the Author 195

Index 197

DEBORAH HEISER, PhD, is CEO and Founder of The Mentor Project, a nonprofit that enlists the help of numerous thought leaders and accomplished professionals to offer mentoring services to students. She is The International Association of Top Professionals 2025 Top CEO and Mentor of the Year, and also an applied developmental psychologist, a TEDx speaker, Marshall Goldsmith 100 Coaches, and a Psychology Today contributor.

Written by Deborah Heiser, an applied developmental psychologist with more than twenty years of experience as a researcher and coach, The Mentorship Edge: Creating Maximum Impact through Lateral and Hierarchical Mentoring explores how we connect to others, feel valued, get pleasure from life, and believe our lives have meaning through forming mentor relationships with others. This book covers both personal and professional mentorship in various fields, including business, research, entrepreneurship, and even art.

The traditional hierarchical mentorship we’re all familiar with is simple and often very effective. But there is also lateral mentoring, where you connect with a friend or colleague—someone you can be vulnerable with—whether they work in your department, another department, or outside of your organization entirely. Lateral mentoring solves many common problems with mentorship, like feeling intimidated by those above us at work, while still providing all of the key benefits that mentorship has been proven to give.

The goal of this book is to inspire individuals to engage in mentoring naturally, whether hierarchically or laterally, in work settings and in their home life. Heiser shares the insights gained from in-depth research and her extensive experience running The Mentor Project, a mentoring organization with more than 100 mentors at the absolute top of their fields.

Whether you have an emotional desire to give back to others to solidify your legacy and ensure that all the boxes you’ve checked over the previous decades mattered, or you’re seeking to connect with more successful individuals as a mentee, The Mentorship Edge is an essential guide to understanding the value of different types of mentorship and taking the first steps towards using this special type of relationship to create a better life for yourself.

Praise for THE MENTORSHIP EDGE

“There are angels amongst us, and in this day and age of huge challenges, massive evils and injustices left and right, our angels need much more than wings. They must be entrepreneurs who never give up, mentors who pull up generations after them, resilient leaders by example who fix our brokenness and give opportunity to young adults where there was none. None such more impactful, important and impressive than Dr. Heiser. In the end, we can best measure our lives by those we helped. Debbie has saved thousands of lives, enabling them and encouraging them to thrive. I tip my hat. She is my hero!”
—PETER SAMUELSON, Entrepreneur, Philanthropist, Executive, Author, Film Producer

“I had the good fortune to be introduced to an amazing lady four years ago who reintroduced me to the importance of mentorship, what mentorship really is, and the many layers involved. I have been truly blessed to have had some of the greatest research hierarchical mentors while learning the craft at NASA, what I did not realize was that my Friends-of-Charlie (FoC) network was a lateral mentor community that would later save my life on orbit during my Space Shuttle Mission STS-114. Dr. Deborah Heiser understands mentorship in all its aspects and realizes its importance in helping us live happy, full, and rewarding lives. Her gift at storytelling and her easy writing style make this knowledge transfer such a joyful experience. Debbie is now a trusted forever FoC.”
—CHARLIE CAMARDA, Astronaut

“The Mentorship Edge, written by Deborah Heiser discusses the impact that mentorship has on an individual’s personal and professional growth. The book includes real-world experiences from mentors with diverse backgrounds to help readers understand the multifaceted benefits of mentorship. Deborah Heiser is an educator and researcher who describes various forms of mentorship with remarkable clarity and insight. The Mentorship Edge is not just a book; it’s a blueprint for anyone seeking to harness the power of mentorship to unlock their fullest potential. This book is a must-read for mentors, mentees, educators, and leaders alike.”
—LATONYA KILPATRICK, SVP, Clinical Research, Innovation & Scientific Communications at Colgate-Palmolive

“Psychologist Deborah Heiser will wind up persuading you that you were born to mentor—on your terms, your way—and that you’ll get more out of it than you ever dreamed of. It will bring you the kind of deep satisfaction everyone yearns for. I promise.”
—HARA ESTROFF MARANO, Editor at Psychology Today

“There are angels amongst us, and in this day and age of huge challenges, massive evils and injustices left and right, our angels need much more than wings. They must be entrepreneurs who never give up, mentors who pull up generations after them, resilient leaders by example who fix our brokenness and give opportunity to young adults where there was none. None such more impactful, important and impressive than Dr. Heiser. In the end, we can best measure our lives by those we helped. Debbie has saved thousands of lives, enabling them and encouraging them to thrive. I tip my hat. She is my hero!”
-Peter Samuelson, Entrepreneur, Philanthropist, Executive, Author, Film Producer

“I had the good fortune to be introduced to an amazing lady four years ago who reintroduced me to the importance of mentorship, what mentorship really is, and the many layers involved. I have been truly Blessed to have had some of the greatest research hierarchical mentors while learning the craft at NASA, what I did not realize was that my Friends-of-Charlie (FoC) network was a lateral mentor community that would later save my life on orbit during my Space Shuttle Mission STS-114. Dr. Deborah Heiser understands mentorship in all its aspects and realizes its importance in helping us live happy, full, and rewarding lives. Her gift at story telling and her easy writing style make this knowledge transfer such a joyful experience. Debbie is now a trusted forever FoC.”
- Charlie Camarda, Astronaut

“The Mentorship Edge, written by Deborah Heiser discusses the impact that mentorship has on an individual's personal and professional growth. The book includes real world experiences from mentors with diverse backgrounds to help readers understand the multifaceted benefits of mentorship. Deborah Heiser is an educator and researcher who describes various forms of mentorship with remarkable clarity and insight. The Mentorship Edge is not just a book; it's a blueprint for anyone seeking to harness the power of mentorship to unlock their fullest potential. This book is a must-read for mentors, mentees, educators, and leaders alike.”
-LaTonya Kilpatrick, SVP, Clinical Research, Innovation & Scientific Communications at Colgate-Palmolive

"Dr. Deborah Heiser is brilliant in her new book The Mentorship Edge. Not only is it a fun and engaging read but all of her work is backed up with 20+ years of scientific research and study. For anyone with a passion for mentoring or for those who would like to get started, this book is for you! Filled with delightful stories, lessons learned and real world impacts, The Mentorship Edge is the book to be reading this year!"
- Jennifer "JJ" Snow, CEO of Snow Storm Advisory and retired Lt Col

"During the course of a 52 year career where I've had the great fortune to meet literally thousands of talented people, the relationships I have the most affection for are the ones I've had with my mentors. To this day I remember with profound gratitude those who taught me how to write a joke, a screenplay, and a novel by giving me instructions about my chosen craft. By providing much needed encouragement as I nervously ventured into a field wondering if I had anything to offer. And by imparting wisdom about how to navigate the hills and valleys in an ever changing business where one has to constantly reinvent themselves to be regarded as relevant.

In The Mentorship Edge Dr. Deborah Heiser has managed to do it all. Teach teachers how to teach. And show young people the value of those who came before them. No matter the field of endeavor, this book assures those nervously embarking on a life path that so many others are feeling the way they do. And to those at the other end of life who've already weathered the wars of their experiences, the satisfaction gained by paying it forward. I am living proof. This book is an absolute triumph!"
- Alan Zweibel, Original "Saturday Night Live" writer, screenwriter, playwright, best selling author

"Psychologist Deborah Heiser will wind up persuading you that you were born to mentor—on your terms, your way—and that you’ll get more out of it than you ever dreamed of. It will bring you the kind of deep satisfaction everyone yearns for. I promise."
- Hara Estroff Marano, editor at Psychology Today

“The Mentorship Edge is a powerful exploration into the profound impact of mentoring. With wisdom drawn from years of research and practice, Deborah delves into the emotional and developmental treasures that mentoring unlocks—not just for the mentees, but for the mentors themselves. This book is a guide for anyone looking to enrich their life and legacy through the meaningful act of mentorship. Whether you're new to mentoring or a seasoned guide, The Mentorship Edge offers valuable insights that will deepen your understanding of this life-enriching practice. Deborah’s approach is both practical and inspiring, making it a must-read for anyone looking to make a lasting impact in their field.”
-Dr. Marshall Goldsmith, Thinkers50 #1 Executive Coach and New York Times bestselling author of The Earned Life, Triggers, and What Got You Here Won’t Get You There