This book was recommended in my counsoling section. I find it very helpful especially in the following aspects:
1. Accept my emotions. There's nothing like "good" or "bad" emotions. Emotions exist for a reason. There's no need to battle or compress my "negative emotions". By accepting it, it actually help the emotion to go away fast.
2. Activate my "observing self". After I read this book, when I feel sad, depressed, frustrated, lonely, I will remember to use this little trick and tell myself "I'm feeling xxx and xxx now, thank you mind." By doing this it reminds me that what I feel and think may be just a temporary feeling and thoughts, which may disappear in a while if I choose not to focus on it too much.
3. Connect with my values. The value compas in this book is really helpful. I'm currently writing my diary with this format. It helps me to easily identify what part of my life is not connected to my value, and what smalll actions I have been taken or I need to take in the future.