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Who Switched Off My Brain?

4.08  ·  Rating details ·  1,180 ratings  ·  149 reviews
Self Help through scripture controlling toxic thoughts and emotions throughout ones life.
Unknown Binding, 139 pages
Published 2007 by Switch on your brain (first published 2006)
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Average rating 4.08  · 
Rating details
 ·  1,180 ratings  ·  149 reviews

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Cassie Shepherd
Mar 14, 2011 rated it really liked it  ·  review of another edition
This was a great book with some inspiring ideas. I loved how Leaf used her Christianity beliefs in companion with her scientific knowledge. She even helped me see a different meaning behind some specific scriptures. Leaf explains the science of the brains chemistry in an extremely easy way to understand. Coming from someone who has anxiety and is always stressing about something, I feel like Leaf offers a lot of solid ideas for learning how to change thoughts and control unhealthy emotions. Even ...more
Feb 18, 2012 rated it it was amazing
I had the honour of hearing this enthusiastic and knowledgeable author speak at my Church over a period of three days.I even got a copy of my book signed:) I was in awe by how she used her psychological research to prove the word of God. The main focus of the book is how thoughts affect our brains; toxic thoughts can physically and emotionally harm us. The good news is that we are able to transform our way of thinking and live more positive, fruitful lives.

Although the writer is a PhD, the book
Dec 30, 2008 rated it it was amazing  ·  review of another edition
Shelves: self-help
Our daughter, Bridget, gave me this book for Christmas. There are only 138 pages in this book. I couldn't put this book down. In fact, I read it in just a few hours today. Dr. Leaf states that reserachers say that 87% of the illnesses that plague us today are a direct result of our thought life. Once you read what she has to say on how your brain works and what happens to your body when we think negative thoughts, you can't wait to get to the last chapter and learn the steps to controlling your ...more
Sep 10, 2014 rated it it was amazing
If I were to summarize “Who Switched off my Brain?”, in one sentence, it would be that: toxic (negative) thoughts, and the emotions that they are associated with, will physically alter the human body in a harmful way and by becoming aware of this process we can implement strategies to reduce negative thinking and moderate the corresponding chemicals that harm us.

At a more in-depth level, Dr. Caroline Leaf starts the book with an explanation of the physical process that takes place in our brain
May 09, 2012 rated it it was ok
This book sort of felt like quasi-science. There were mentions of studies done and research shows this but there was no reference to what studies these were or who did them.

While I think there are some good things in this book and that I agree with the fact that our thoughts and emotions can affect our physical well-being, I don't agree with it to the extent that the author holds to be true and that we just need to change our thought patterns to become healthy again. There definitely seems to be
Thomas Hadley
Jan 21, 2013 rated it it was amazing
This is, by far, the most practical book on cognitive development and mind change I have ever read. The practical five step process she developed is very simple and very powerful to use. I have had mental breakthroughs using her system that I have needed for decades.

Not only does she offer the practical system, she goes into great detail (but not too confusing detail) into how and why our thoughts have the effect that they do on our brain cells. This detail allows us to have confidence in apply
Jun 28, 2010 rated it it was amazing
Very good book. I would recommend it to everyone who wants to understand how the mind and the power of our thoughts/words work. The author is a Christian psychologist/therapist, but she does not push Christianity, she just states that she is a Christian and that works for her. She believes that faith is an important component for a healthy life/mind, and challenges the reader to find their own belief system.

Dr. Leaf's way of explaining scientific/medical processes is simple, and all audiences co
Feb 02, 2011 rated it did not like it
I really tried to get into this and I thought it would offer real insight. At best it was warmed over info that you could get from any self help book wrapped in a neuroscience disguise.

Monica Stopha
Jun 13, 2020 rated it it was amazing  ·  review of another edition
a must read for anyone who struggles with depression/anxiety/stress (so all of us??)
Karen & Gerard
I found this to be fascinating and very helpful. I am interested in scientific research that relates to my everyday life which is in abundance in this short book about the brain. The beginning chapters were pretty technical and had a lot of words related to the brain that I am unfamiliar with so that part dragged along a bit for me. However, after reading those beginning chapters, I have a much better understanding of how thoughts are processed and stored.

Caroline Leaf goes into a lot of detail
Jul 25, 2018 rated it liked it  ·  review of another edition
The book feels like a very simplified application of neuroscience, neuroplasticity and epigenetics, how we can change our thoughts and our brains in the process. It does not contain enough objectivity or information for the reader to make a fair evaluation. I guess the author tries to make it simple, and the notes in the back show that it is much more complex, but it still feels a lot like popular neuroscience(or neuroscience for dummies). Together with this science, she leaps to scripture and s ...more
Heidi The Reader
Oct 08, 2013 rated it liked it
Shelves: non-fiction
The Goodreads description of this book surprised me. The author quotes the Bible maybe a handful of times. I wouldn't describe this as a scriptural guidance book so much as a book about the brain with the occasional Biblical quote thrown in.

Leaf does a great job of breaking down how the brain creates and stores memories. She discusses: why we save some memories and not others, how to form new memories, and how children are affected by their brain chemistry. Chapter Six, detailing coping mechanis
Feb 20, 2019 rated it it was ok
I love the premise of this book and of Dr Leaf’s take on toxic thought but I was very disappointed with the structure of the book itself. 5 of 6 chapters were filled with repetitive info, some irrelevant, and illustrations that didn’t make sense or, at best, didn’t add to the concept. The last chapter was the best but still not very in-depth if you are looking for practical application. Again, I’m a fan of Dr Leaf’s work but I would start with another Of her books instead of this one. Hopefully ...more
Feb 19, 2015 rated it really liked it
Is really insightful about the brain. A short book that will help you improve your life. I would definitely recommend.
May 16, 2009 rated it it was amazing
Now you know why Christ said to put the mind on good things.
Apr 21, 2019 rated it liked it
This book is a highly practical guide to removing unhealthy patterns in our lives. It focuses on a process of gathering details, reflecting on their healthiness (or destructiveness), journaling in order to map out what is happening, revisiting the issue with greater clarity and then reaching out with a new, healthier habit.

Dr. Leaf has identified twelve debilitating processes that lead to breakdowns in thinking, health and spiritual well-being. She calls them the “dirty dozen”. They are: toxic t
Apr 22, 2020 rated it it was amazing
I finished this book and immediately wanted to reread it, so I probably will since I am on vacation.
Apr 18, 2021 rated it liked it
This book (for me) was a nice review of anatomy and physiology of the brain at best. It read a lot like a highschool psychology textbook just less in depth. The first hundred pages or so covered the anatomy of a thought, how we store information, and how thinking toxic thoughts will basically give you many diseases and can kill you.

Very positive, I know.

Which I don’t disagree with. This book (in MY opinion) is great for someone who struggles with stress and mild anxiety. For that I added a sta
"...once that cycle of toxic thinking has been broken, your thoughts can actually start to improve every area of your life..." (13)

"A thought may seem harmless . . . Thoughts are measurable and occupy mental 'real estate.' Thoughts are active; they grow and change. Thoughts influence every decision, word, action and physical reaction we make. Every time you have a thought, it is actively changing your brain and your body..." (13)

"The result of toxic thinking translates into stress in your body,
Dec 31, 2010 rated it really liked it
3 1/2 - 4 stars

This book is quite an eye-opener! Dr. Caroline Leaf takes you on a journey through each step of a thought and breaks down each specific place in the brain (and body) it affects. It would appear the entire body - what it feels, how it performs, it’s very framework, even our DNA - can and will be affected by our thoughts, be they positive or negative.

“Who Switched Off My Brain?” was really good, and very fascinating in the medical sense. Dr. Leaf explains the big, “doctor words” an
Roxane Lapa
Dr Caroline Leaf is a brain scientist who has specialized in the science of thoughts for over 20 years. She is also a Christian. In this book, she explains scientifically (though in layman's terms) how our thoughts affect our bodies, and even our genes (epigenetics). She shows how to utilize this knowledge to better our mental and physical health.

Some minor annoyances...

She throws in Bible verses here and there that are pertinent to what she is discussing, but not always taken in context to the
Mar 15, 2018 rated it really liked it
The reason why I didn't give five stars is that a lot of the information presented is scientific, and just not very interesting or of use to me. The author did a great job of relating the scientific to Biblical Scriptures, which is not easy. In fact, it is hard to convince scientists that there is a God, so it was refreshing to read a book that explained the physical processes going on in your brain, and then give recommendation how to get mental healing from toxic issues by relying on scripture ...more
Jan 23, 2021 rated it liked it
I follow Dr. Caroline Leaf on IG and love her posts so I thought I’d check out one of her books from the library. Maybe some of her newer books are better? Most of this book is a dry scientific explanation of the mind-body relationship as it pertains to toxic thoughts. The last chapter was practical application. I feel like the first five chapters could have been condensed and the last chapter practical application could have gone way deeper. Overall though, helpful info to know and apply to you ...more
Debbie Fox
This book is revolutionary! I love that God has shown Dr. Caroline how science is matching up with what the Bible has said all along! Fascinating!
Cassian Lynne
Apr 17, 2019 rated it it was amazing
Dr. Leaf breaks down the way the brain works and creates memories and thoughts, and explains how we can work within our own brains to rewire them from toxicity to health in 12 main areas of our lives. This is vital! I now feel the freedom to throw out a lot of other books on healing and self-help that were good but didn’t quite scratch the itch... this truly scratches every itch and, best of all, it’s written in basic, clear writing.

This book is a must-read, and I recommend taking the time to g
Ruth Ropper
Very interesting book with a lot of details about how your brain works in a way that makes it understandable. Author doesn't really think you should used medication for mental health issues unless it is absolutely essential and uses research to show how changing your thinking should improve your mental thought processes and effects on the rest of your body. Not sure I agree with this coming from healthcare background. ...more
Geo Hendrick
Sep 13, 2018 rated it really liked it  ·  review of another edition
Shelves: non-fiction
Good book. Sometimes it got too "Sciency" for me; so I would take breaks and get back to reading. There were whole Paragraphs I didn't understand. I would recognize that I'm still learning and keep going on. I love books on the brain and I loved all of her practice things I can do to improve my brain and life! ...more
May 08, 2019 rated it really liked it
Shelves: personal-growth
I'm happy I discovered this book. I loved the Scientific breakdown of how we process our thoughts and how we can rewire toxic patterns! Very helpful for anyone of any age. I mostly benefitted from the Metacog method of journaling my specific thoughts and I will definitely be adding this to my writing regimen! Thanks Dr. Leaf this book is great! ...more
Kara Harris
Mar 11, 2020 rated it it was amazing
This was a great read! I loved how Dr Leaf used her Christian approach on troubling thoughts. Reminded me a good bit of Battlefield of the Mind by Joyce Meyers! Although I listened to the audio version, EVERYONE should read this book at some point! Always be able to train the mind..because what you think, is what is!
Karen Shilvock-Cinefro
Dr Leaf is a specialist in neuroscience and neuropsychology. This is a handy, easy to read , and cutely illustrated book on way our brains function and things that we can do to help the brain work positively. The workings of the brain affect the whole body and many of our ailments can be helped with a better mind approach.
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Dr. Caroline Leaf is a cognitive neuroscientist with a PhD in Communication Pathology specializing in Neuropsychology. Since the early 1980‘s she has studied and researched the Mind-Brain connection. During her years in clinical practice as a Communication Pathologist she developed tools and processes that help people develop and change their thinking and subsequent behavior. Her scientific Scienc ...more

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