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The Success Hangover by Katie Harvey
Amazon UK No.1, two categories

I was nearly seventeen when my body
finally forced someone to listen.

Part memoir. Part performance book. Part challenge to the idea that success should require self-abandonment.

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How it opens

I woke my parents up at 2 a.m. to tell them I had a sore eye. That sentence does not make sense, I know. But that is exactly why it mattered.

I would never have woken them for something small. I was the kid who handled things, who did not make a fuss, who pushed through.

We can stop before we break.

We just do not.

From the outside, it looked like drive, ambition and resilience.

From the inside, it was a nervous system that never really stood down.

Burnout is not a personality flaw. It is a system overload.

And systems can be rebuilt.

Twenty-three chapters

What's inside

Part 1

The pattern

How being the capable one becomes the problem

  • Addicted to Approval
  • Capability Became My Identity
  • The Diagnosis That Should've Changed The Game
  • The Only Girl on Site
  • The Unspoken Rule: Don't Be a Burden
  • Burnout Looks Like You
  • Addison's in a Hustle World
  • The Crashes That Could Have Killed Me

Part 2

The breaking point

What happens when pushing through stops working

  • When Strength Stops Working
  • Enter Muay Thai: Where Pressure Gets Honest
  • Discipline Without Self-Punishment
  • The Fight I Lost Before I Even Got in the Ring
  • Calm Is a Skill, Not a Personality Trait

Part 3

The rebuild

Performing at a high level without paying for it afterwards

  • Baseline Before Brilliance
  • Recovery Is a Strategy, Not a Reward
  • Energy Management for Real Humans
  • Ambition Without Self-Abandonment
  • The Nervous System Is the Business
  • Relationships, Not Just Results
  • Sustainable Success Feels Different
  • Calm Is a Power Move
  • You Don't Need to Break to Change
  • The Success Hangover Ends Here

The system at the back of the book

B.R.E.A.T.H.E

"If you take one thing from this book, let it be this. High performance is not built on pressure alone. It is built on a regulated, supported nervous system."

  • BBaselineKnow where you actually are. You cannot perform well if your baseline is constantly depleted.
  • RRecoveryRecovery is not a reward for finishing everything. It is what allows you to keep going.
  • EEnergyEvery decision, conversation and opportunity depends on the state you are operating from.
  • AAlignmentYour body is not separate from your performance. When body and mind are misaligned, nothing performs at its best.
  • TTensionStress is not the enemy. Unmanaged stress is.
  • HHabitsSustainable performance is not built on motivation. It is built on small, consistent actions repeated over time.
  • EEvolutionYou do not just perform better. You become someone who no longer needs to run on empty.

Notes and references

It isn't just my story.

The ideas here are drawn from lived experience and from established research across neuroscience, performance psychology, burnout and stress physiology. The book cites its sources.

World Health OrganizationSapolsky, Why Zebras Don't Get UlcersPorges, Polyvagal TheoryMcEwen, chronic stress and allostatic loadWalker, Why We SleepBaumeister, decision fatigueMaslach & Leiter, burnout researchHarvard Study of Adult Development

This book is not a substitute for medical or psychological advice.

The book is where it started.
It isn't where it stops.

Everything in here is what I now coach people through privately, and what I speak about on stage.

Performance coaching Speaking

You do not need to wait for burnout
to take this seriously.

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