One quote from the early part of the book that I liked is "Depression doesn't care if you're famous, live in a mud hut or what culture you come from, it just loves everyone". People in our society seem to think that you cannot have depression if you are famous, rich, own a good car, have a happy family, etc. It is a disease. It doesn't care what your life is like, it will target you no matter what.
I particularly loved part 3 of the book. This part was all about neuroscience and how the brain works. I have always been interested in the workings of the brain and may have applied for neuroscience if the university I wanted to go to offered it. The reason we, as humans, seem to focus on the bad things is that the brain detects negative information faster than it does positive. This is from long ago when we always had to be on the lookout for things that could have killed us. Now it can cause depression. I also found some of the neuroscience facts very interesting. Like, by just thinking about using muscles, you are strengthening the neural pathways for these muscles so the next time you come to use them, the response will be faster and stronger. That is why many professional athletes now have sessions where they visualise themselves taking part in the sport, as well as physical training.
Part 4 was where Ruby introduces Mindfulness. She describes it as "Intentionally paying attention, in the present moment, in a non-judgemental way". The idea is to not ignore an emotion, but to acknowledge it, focus on it, see how it ebbs and flows. By seeing that it is constantly changing, your fear of this emotion or thought is diminished and eventually they release their grasp of you.
In part 5, Ruby gives alternatives to Mindfulness, realising that although it has helped her, it may not help everyone.
In all, I really enjoyed the book and found it a very easy read. I would highly recommend it to anyone.