Skip to content

The 40 Percent Rule — An Excerpt from Can’t Hurt Me by David Goggins

The 40 Percent Rule -- An Excerpt from Can't Hurt Me by David Goggins

Excerpt: What drives David Goggins? Read about a military mindset he adopted called The 40 Percent Rule that allows him to unleash his full potential!


The following is an excerpt from David Goggins’ book, Can’t Hurt Me.  In it, he discusses a military mindset that guides his life and allows him to tap into potential that most people only dream of being able to tap into.

He calls it The 40 Percent Rule and it’s about “callousing” the mind so that we can push our bodies further than we normally would.  It’s about understanding that most of us are wired (literally) to stop way before we’ve approached our true max and about learning how to work every day to quiet the mind so that we can tap into those huge stores of potential that most of us never get to taste.

For details, please welcome the words of Mr. Goggins himself.  I hope it finds you well. ~ Matt

Your guide to a life with LESS regret…

Download our 30-Day guide and get INSTANT access to:

  • 30 Powerful, One Page Meditations
  • 30 Path-Altering Challenges
  • 30 Original, Downloadable Illustrations

…Change your life by changing the DIRECTION of your life in 30 days. Or your money back.


Enter David Goggins:

The human body is like a stock car. We may look different on the outside, but under the hood we all have huge reservoirs of potential and a governor impeding us from reaching our maximum velocity.  In a car, the governor limits the flow of fuel and air so it doesn’t burn too hot, which places a ceiling on performance.  It’s a hardware issue; the governor can easily be removed, and if you disable yours, watch your car rocket beyond 130 mph.

It’s a subtler process in the human animal.

Our governor is buried deep in our minds, intertwined with our very identity.  It knows what and who we love and hate; it’s read our whole life story and forms the way we see ourselves and how we’d like to be seen.  It’s the software that delivers personalized feedback—in the form of pain and exhaustion, but also fear and insecurity, and it uses all of that to encourage us to stop before we risk it all.  But, here’s the thing, it doesn’t have absolute control.  Unlike the governor in an engine, ours can’t stop us unless we buy into its bullsh*t and agree to quit.

Sadly, most of us give up when we’ve only given around 40 percent of our maximum effort.  Even when we feel like we’ve reached our absolute limit, we still have 60 percent more to give!  That’s the governor in action!  Once you know that to be true, it’s simply a matter of stretching your pain tolerance, letting go of your identity and all your self-limiting stories, so you can get to 60 percent, then 80 percent and beyond without giving up.  I call this The 40 Percent Rule, and the reason it’s so powerful is that if you follow it, you will unlock your mind to new levels of performance and excellence in sports and in life, and your rewards will run far deeper than mere material success.

The 40 Percent Rule can be applied to everything we do.  Because in life almost nothing will turn out exactly as we hope.  There are always challenges, and whether we are at work or school, or feeling tested within our most intimate or important relationships, we will all be tempted to walk away from commitments, give up on our goals and dreams, and sell our own happiness short at some point.  Because we will feel empty, like we have no more to give, when we haven’t tapped even half of the treasure buried deep in our minds, hearts, and souls.

I know how it feels to be approaching an energetic dead end.  I’ve been there too many times to count.  I understand the temptation to sell short, but I also know that impulse is driven by your mind’s desire for comfort, and it’s not telling you the truth.  It’s your identity trying to find sanctuary, not helping you grow.  It’s looking for status quo, not reaching for greatness or seeking wholeness.  But the software update that you need to shut your governor down is no supersonic download.  It takes twenty years to gain twenty years of experience, and the only way to move beyond your 40 percent is to callous your mind, day after day.  Which means you’ll have to chase pain like it’s your damn job!


If you enjoyed this excerpt on The 40 Percent Rule from David Goggins, definitely check out his book, Can’t Hurt Me below.  It comes highly recommended :)

Book Overview:  For David Goggins, childhood was a nightmare – poverty, prejudice, and physical abuse colored his days and haunted his nights. But through self-discipline, mental toughness, and hard work, Goggins transformed himself from a depressed, overweight young man with no future into a US Armed Forces icon and one of the world’s top endurance athletes. The only man in history to complete elite training as a Navy SEAL, Army Ranger, and Air Force Tactical Air Controller, he went on to set records in numerous endurance events, inspiring Outside magazine to name him The Fittest (Real) Man in America.  In Can’t Hurt Me, he shares his astonishing life story and illuminates a path that anyone can follow to push past pain, demolish fear, and reach their full potential.

Buy from Amazon! Listen on Audible!


Read Next:

Are You Serious About Moving Forward in Your Life...? Our Guides Are For You. 👇🏼

The “Life With Less Regret” Guide

Fast is the modern day default… Fast in the wrong direction can end up being one of your life’s biggest regrets. This 30-Day Guide will help you build unshakable confidence in your life’s direction without costing you thousands on life coaching…

The “Anti-Hustle, Habit Building” Guide

Exercise, eat healthier, meditate, journal, read more… You know the WHAT… This 30-Day Guide will (finally) show you the HOW… minus the hustle, minus the yo-yo-ing, minus the burnout, and definitely minus the need for NAVY Seal level self-discipline and/or grit…

Matt Hogan — Founder of MoveMe Quotes

Written by Matt Hogan

Founder of MoveMe Quotes. On a mission to help busy people do inner work—for better mental health; for healing; for personal growth. Find me on Twitter / IG / Medium. I also share daily insights here. 🌱

It has taken me 1,000’s of hours to build this free library for you. If it has helped you, you can support my continued effort here. ☕️

Share this:

Our BEST Insights… Emailed Weekly.

Join 6,000+ readers getting our BEST quotes, picture quotes, articles, excerpts, insights, and more—sent straight to their inbox, every Sunday, for free…! 👇🏼