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The Joy Thief: How OCD steals your happiness – and how to get it back

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A personal and practical guide to navigating the complex world of obsessive-compulsive disorder (OCD).

When Penny Moodie hears people say that they're 'a bit OCD' about cleaning or tidying, she can't help but feel frustrated. It took her twenty-three years to be diagnosed with obsessive-compulsive disorder – a debilitating mental health condition involving intrusive thoughts and accompanying physical or mental compulsions – and the stigma and misunderstanding around OCD means this kind of delay is all too common.

Weaving her personal experience with the stories of other OCD sufferers, as well as the expertise of some of the world's leading OCD doctors, psychologists and psychiatrists, Penny explores OCD's symptoms, stigmas and treatments with raw honesty and zero judgement. From childhood OCD, shame and medication to perinatal mental illness, relationship OCD and group therapy, this book provides an expansive and very personal insight into the complexities of the condition – and the life-changing impact that best-practice treatment can have.

An invaluable resource for those suffering from OCD, as well as for their families and loved ones, The Joy Thief shines some much-needed light and hope on a disorder that is too often minimised and misunderstood.

'Generous, intimate and mind-opening. This book helps those living with OCD feel understood, and helps those who don't to understand. Rarely does a book absorb readers in such intimate, challenging subject matter, only to leave them feeling truly hopeful at its close.' Jamila Rizvi

280 pages, Kindle Edition

Published September 12, 2023

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Penny Moodie

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5 stars
304 (52%)
4 stars
210 (36%)
3 stars
54 (9%)
2 stars
8 (1%)
1 star
1 (<1%)
Displaying 1 - 30 of 57 reviews
1 review
September 28, 2023
Penny, I hope you see this review. I wanted to thank you for publishing your new book. My husband bought it for me at our local bookshop after I shared my 9-year struggle with OCD. I am halfway through your book, and I just wanted to share with you that your book has helped me a lot. It makes me feel less alone. My OCD ebbs and flows, and, at the moment, it is debilitating. Your book has felt like therapy for me during this period. I still fear finding a psychologist who specialises in ERP and sharing my intrusive thoughts with them, but your book has brought me closer to building the strength to do so. Again, I can't thank you enough for your advocacy.
Profile Image for Hannah.
215 reviews
November 1, 2024
ocd hard launch?? 🤪

i chose to read this book because it was recently published (2023), had a mix between concrete facts/information and personal stories, and seemed like it was written in a conversational tone.

this book made me feel so much less alone. yes, ocd is really difficult and exhausting and tiring and scary and unfair and embarassing, and has pretty seriously impacted my life in a lot of different ways, and also! it is not my fault, it is not just me, i am not a bad person because of it. i already knew these things, theoretically, but they only sometimes feel true, and it was helpful to read them with my actual eyes in an actual book. i cried a lot.

if you don’t have ocd, but someone in your life does or you just want to learn more about it, i think this book (or tbh anything else from a reputable source you read about ocd) might teach you a lot. tldr: whatever you think you know about ocd might be false and/or incomplete, because there are so many popular misconceptions and stereotypes about it. also whatever you think ocd is or is like to life with, it is probably worse and more difficult than whatever you are imagining, for a lot of the same reasons. not to be so bleak, but it Really Sucks. there was also a lot of information for how to help support people in your life who do, or might, have ocd.

despite the literal horrors, this book kept it real (no sugarcoating) but was also overall hopeful, encouraging, and even funny at times. i think this book will help a lot of people and change lives - i actually know that it has, because i read the reviews on it before i read it myself :)
Profile Image for Jess Wong.
52 reviews
January 14, 2026
4.5 stars - this book was compassionate, honest and informative. I learnt a lot from the content and the personal stories woven throughout. Made me reflect more on my own ?future role in mental health care system and the importance of empathy and warmth from health professionals when people are brave enough to seek help. Would highly recommend if you yourself or a loved one have OCD, or if you want to understand it more!
Profile Image for Daisy Winney.
81 reviews
May 8, 2025
I’ve never felt so seen lol. Such a digestible but educational read
Profile Image for Molly Rose.
9 reviews1 follower
February 1, 2024
Incredible. Never underestimate the life saving power sharing vulnerability. I wish I could go back in time and give this to my teenage self to read. It would make up for so many hours lost to my brain. Thankyou Penny 🩷
Profile Image for Laura H.
6 reviews1 follower
September 17, 2023
A beautiful blend of personal experiences and evidence based research about OCD. The author’s tone is incredibly honest, empathetic and warm.
Profile Image for Lysh.
461 reviews12 followers
January 2, 2024
Physical. Naz and Cookie book club. 5 stars. A brilliant exploration of OCD and how to support those living with it. The balance of personal with professional information was perfect.

2024 TBR Challenge
Profile Image for Amy.
15 reviews
January 30, 2025
Very informative if you’re learning about OCD. Very validating if you’re experiencing OCD.
18 reviews
May 7, 2024
I am almost certain this book will save a life.

This honest, relatable book is a wonderful mix of clinical information and real life examples, almost a layman’s guide to OCD.

As someone who has received treatment for an eating disorder I found this book validating in its kind approach to mental illness as a whole and feel it’s an excellent read for everyone.

We will all know someone with a mental illness, it can’t hurt to improve our knowledge! Well done Penny.
Profile Image for astrid bee.
408 reviews5 followers
October 27, 2023
this isn’t the first book i have read on ocd but it is by far the most comprehensive, and felt deeply personal with several different people’s lived experience woven throughout it. couldn’t recommend reading it more
Profile Image for Ciara Collister.
23 reviews
February 22, 2025
Extremely validating for me, I have been misdiagnosed for years and finally after almost 2 decades of symptoms was diagnosed with OCD. I'd reccomend this book to anyone who wants to learn more about OCD
6 reviews4 followers
February 15, 2025
When I first got recommended this book by my therapist, I thought I was getting roped into reading some surface-level, self-help drivel, but it’s hard to say just how important this book has been.
With its personal anecdotes, notes from professionals, humour, and honesty, this book has been insightful, comforting, and confronting.
I wish that I could’ve read this book when I was 10 years younger but I feel grateful and better off having been able to read it at all
Profile Image for Emily Katy.
362 reviews99 followers
June 5, 2025
A useful read for anyone with OCD or anyone who loves someone with OCD. I particularly liked the bits about people with OCD having an overdeveloped sense of responsibility for keeping people safe and caring very deeply about other people or having a very creative brain and how this can lead to OCD. I also liked that the author emphasised how the ‘actual content of the obsessions isn’t important’, but still covered a variety of obsessions including more stigmatised/taboo forms of OCD. The author is Australian so the information about the medical system was based on the Australian healthcare system but parts were still relevant.
Profile Image for Paige.
40 reviews1 follower
April 30, 2024
so well written and hugely encouraging. made me feel seen and so much less alone
Profile Image for Morgan Menzel.
175 reviews
September 22, 2023
As a fellow sufferer of OCD, this book has helped me in more ways than one. Penny's raw, incredibly detailed and honest account of the experiences she has had since a young age has not only shown me how OCD can affect people in different ways, but has also assured me that I'm not alone in the journey I'm currently on, and with help, there will be a light at the end of the tunnel.
Profile Image for Renu.
3 reviews
February 21, 2025
If you have OCD, read it. If someone you love has OCD, read it. If you want to learn more about OCD, read it. Those without OCD don’t often realise how debilitating and pervasive it can be. How alone it inevitably makes you feel. This book gives you that insight. Penny strikes a good balance of drawing on her own experiences, those of others, and the perspectives of professionals equipped to tackle the insufferable thing that is OCD. Hugh’s insights at the end were also a lovely way to tie everything together. You can find your person (or people), outside of professionals, who will stick around and support you. Who won’t abandon you or withdraw from you because they don’t get it, or because it/you are too much for them. It wasn’t an easy read by any means (looking at you Chapter 9), but it was an important read.
Profile Image for Caitlin Doberer.
137 reviews1 follower
October 16, 2025
in order of OCD awareness week, I thought it was about time I read a book detailing what it is like to have OCD, treatments, therapy and allllll the things that come with a mental health diagnosis.

I personally am quite far down the road on my journey with OCD, but I recommend this book anyway. It’s a good refresher of information and gentle reminder that you’re not alone, or, a helpful resource if your journey is just beginning. Also recommend for anyone wanting to learn more about OCD or support a loved one with it.

Always happy to talk more about OCD and my experience, and/or support others going through it themselves or wanting to support others 🫶🏼🫶🏼🫶🏼
Profile Image for Sophiealka.
153 reviews
February 1, 2026
A well written memoir/guidebook for OCD that blends sincere personal experience and narrative with evidence-based information on treatment and support resources. This would be a great book for both those with OCD and professionals alike to read. I loved that it was specific to Australia and recommended locally relevant resources.
Some of the author's references to pop culture will be peculiarly relatable for Millennials and Gen X. Younger Gen Z readers may struggle to relate to these.
Quality of the resources and information was great but the book still managed to be down-to-earth, funny, touching, and highly readable.
Profile Image for Cath.
8 reviews1 follower
November 7, 2023
If you know and / or love a person with OCD you need to read this book. Penny is incredibly honest and vulnerable in the writing of this book, and describes the pain and crippling distress of OCD, so much of OCD is unseen, it’s not washing your hands a hundred times it is so much more complex and at times debilitating. It is under diagnosed and many people suffer for yours due to shame and stigma. Thank you Penny for sharing your story, you will never know how many people you have touched with this.
Profile Image for Hayden Reid.
30 reviews2 followers
January 13, 2024
Having struggled with OCD most of my life, this book spoke to me like no other. There is a great combination of experiences shared by Penny herself as well as others she’s interviewed. As a complicated mental health disorder, Penny found a way to delve into OCD’s depths without turning it into a scientific journal suited to only academics. For anyone who struggles with OCD or knows someone who does, I would highly recommend reading this book. It’ll open your eyes to the silent monster that is more than just checking you’ve locked the house or turned your stove off.
Profile Image for Em.
294 reviews
June 3, 2025
Enlightening and helpful read, I resonated with much of this.

Exposure and response prevention therapy (ERP), put yourself into situations where you feel your compulsions and resist them.
Create a loop tape of you saying outloud your fears, and listen to it often throughout the day.
Need to stop avoiding the fear, as this makes the fear seem bigger.

"ERP comprises two parts: exposure, which involves facing the thoughts, images, objects or situations that activate your obsessions; and response prevention, which is choosing not to carry out the compulsion you perfoem when triggered."
Profile Image for Olivia.
10 reviews2 followers
November 7, 2023
A book I could not put down - incredibly well written. This book was rifled with research and information, I could not stop sharing the information I learnt with my friends - to the point they asked if I was reading a textbook. Yet, it couldn't have felt further from that - the way anecdotes were intertwined with information, as well as the stories of sufferers other than the author, made for a magnificent read.
Profile Image for Keryn Powell.
158 reviews1 follower
March 26, 2024
Easy to read, informative and positive. The layout was great and the expert options and personal stories interspersed with Penny's own journey flowed well. I would have been interested in a bit more of the biology and also some of the links and overlaps with other mental health diagnoses. The chapter on ERP was useful although I would have like a bit more detail and examples. Overall, a good book for people who have OCD, wonder if they have OCD and for families and friends of people with OCD.
3 reviews
January 9, 2024
Just wow. Whether you have experience with OCD or not, this book is a wonderful read. It is a brave, raw, and beautifully written account of life with OCD. This book brings understanding and advocacy for those with OCD, without a shred of patronising language or tone. Like advice and support from the kindest friend.
Profile Image for Alena.
346 reviews4 followers
January 2, 2025
I flew through this! The author has such a way with flow of words; I don’t have OCD (but it’s important to note an average brain can often relate to many of the experiences, from a lessened perspective) but nonetheless, the insights into how a daily life with OCD is experienced and the ability to change perspectives is well documented in this book!
Profile Image for Meg Vierboom.
25 reviews
March 27, 2025
Easy read self help. Provides some useful anecdotes, ideas and resources, but a bit lacking in research and case studies for me - I want to be immersed in the histories and psychological approaches, the longitudinal data etc etc. Nonetheless, a good entry point for those wanting to know about OCD. I appreciated the Australian context since a lot of contemporary psyc writing originates elsewhere.
6 reviews
January 9, 2026
This is an overall great read and versitile for those suffering, those living with, and those curious about OCD. It also has lists of helpful resources. As someone with OCD, I was able to connect with the author's accounts, and thankful that there are resources out there for those battling the confusion and stress that is OCD.
171 reviews
January 24, 2024
My past definition of Obsessive-compulsive Disorder OCD is about obsessive cleaning or tidying. I now realize it is a more serious health condition. Penny, thank you for sharing your story. I also just learned about Exposure and Response Prevention (ERP) terminology.
Displaying 1 - 30 of 57 reviews