Say What They Can't Unhear: The 9 Principles of Lasting Change book cover

Say What They Can't Unhear

The 9 Principles of Lasting Change

Tamsen Webster
4.32(31 Reviews)

Overview of Say What They Can't Unhear

In "Say What They Can't Unhear," Thinkers50 honoree Tamsen Webster reveals nine principles that transform resistance into receptivity. Named a must-read by change management leaders, this guide shows why aligning with people's identities - not just their logic - creates the lasting change others can't ignore.

Key Themes in Say What They Can't Unhear

  • intrinsic motivation
  • psychological reactance
  • internal narrative
  • belief alignment
  • message resonance

Quotes from Say What They Can't Unhear

  • Sustainable change requires intrinsic motivation.

  • Trust forms the foundation of change.

  • What doesn't work internally will never work externally.

  • People will change an action only if the story supporting it changes first.

Characters in Say What They Can't Unhear

  • Tamsen WebsterAuthor, marketing leader, and persuasion expert
  • Dr. Ignaz SemmelweisPhysician whose handwashing theory was rejected
  • Florence NightingaleFounder of modern nursing who influenced change

About the Author

About the Author of Say What They Can't Unhear

Tamsen Webster, bestselling author of Say What They Can’t Unhear: The 9 Principles of Lasting Change, is a renowned message strategist and TEDx Idea Architect specializing in persuasive communication and organizational change.

With 25+ years bridging academic theory and real-world application, her work in this business and leadership book builds on frameworks developed through roles at Harvard Medical School, MIT’s Martin Trust Center for Entrepreneurship, and as executive producer of the legacy TEDxCambridge event.

A Thinkers50 Radar honoree (2022), she previously authored Find Your Red Thread: Make Your Big Ideas Irresistible, a guide to crafting compelling narratives adopted by Fortune 10 companies and impact startups alike.

Webster’s MBA and crisis communications background informs her signature approach to accelerating behavioral shifts through story-driven case-building. Her methods underpin leadership programs at Harvard Innovation Labs and feature in talks for organizations ranging from Intel to the Global Innovation Forum.

Say What They Can’t Unhear distills three decades of research into a system for creating messages that reshape perspectives—work that has positioned her as one of Fast Company’s “top voices in change management.”

Download Summary of Say What They Can't Unhear

Get the Say What They Can't Unhear summary as a free PDF or EPUB. Print it or read offline anytime.

FAQs About This Book

From Columbia University alumni built in San Francisco

LOVED BY

1,000,000+ curious minds.

4.7
avg rating
1M+ learners

"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

@Moemenn
platform
star
star
star
star
star

"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

@Chloe, Solo founder, LA
platform
comments
12
likes
117

"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

@Raaaaaachelw
platform
star
star
star
star
star

"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

@Matt, YC alum
platform
comments
12
likes
108

"Reading used to feel like a chore. Now it’s just part of my lifestyle."

@Erin, Investment Banking Associate , NYC
platform
comments
254
likes
17

"Feels effortless compared to reading. I’ve finished 6 books this month already."

@djmikemoore
platform
star
star
star
star
star

"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

@Pitiful
platform
comments
96
likes
4.5K

"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

@SofiaP
platform
star
star
star
star
star

"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"

@Jaded_Falcon
platform
comments
201
thumbsUp
16

"It is great for me to learn something from the book without reading it."

@OojasSalunke
platform
star
star
star
star
star

"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

@Leo, Law Student, UPenn
platform
comments
37
likes
483

"Makes me feel smarter every time before going to work"

@Cashflowbubu
platform
star
star
star
star
star

"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

@Moemenn
platform
star
star
star
star
star

"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

@Chloe, Solo founder, LA
platform
comments
12
likes
117

"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

@Raaaaaachelw
platform
star
star
star
star
star

"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

@Matt, YC alum
platform
comments
12
likes
108

"Reading used to feel like a chore. Now it’s just part of my lifestyle."

@Erin, Investment Banking Associate , NYC
platform
comments
254
likes
17

"Feels effortless compared to reading. I’ve finished 6 books this month already."

@djmikemoore
platform
star
star
star
star
star

"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

@Pitiful
platform
comments
96
likes
4.5K

"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

@SofiaP
platform
star
star
star
star
star

"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"

@Jaded_Falcon
platform
comments
201
thumbsUp
16

"It is great for me to learn something from the book without reading it."

@OojasSalunke
platform
star
star
star
star
star

"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

@Leo, Law Student, UPenn
platform
comments
37
likes
483

"Makes me feel smarter every time before going to work"

@Cashflowbubu
platform
star
star
star
star
star

"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."

@Moemenn
platform
star
star
star
star
star

"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."

@Chloe, Solo founder, LA
platform
comments
12
likes
117

"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."

@Raaaaaachelw
platform
star
star
star
star
star

"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."

@Matt, YC alum
platform
comments
12
likes
108

"Reading used to feel like a chore. Now it’s just part of my lifestyle."

@Erin, Investment Banking Associate , NYC
platform
comments
254
likes
17

"Feels effortless compared to reading. I’ve finished 6 books this month already."

@djmikemoore
platform
star
star
star
star
star

"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."

@Pitiful
platform
comments
96
likes
4.5K

"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."

@SofiaP
platform
star
star
star
star
star

"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"

@Jaded_Falcon
platform
comments
201
thumbsUp
16

"It is great for me to learn something from the book without reading it."

@OojasSalunke
platform
star
star
star
star
star

"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."

@Leo, Law Student, UPenn
platform
comments
37
likes
483

"Makes me feel smarter every time before going to work"

@Cashflowbubu
platform
star
star
star
star
star
Start your learning journey, now