★★★★★
The book is called "The Happiness Code" by Dr. Gary Laundre. The technique taught in the book is a form of self-touch energy healing -- very simple and quick to apply with your own hands, and for myself it gave me immediate relief from anxiety. I would suggest that people experiencing anxiety, depression, anger, PTSD, or even muscle twitching (or muscle tremors) check it out on Amazon, and if you Google search this book, the author has also set up a website.
In addition to relieving my anxiety, the technique also reduced some muscle twitching I have recently been experiencing, so it seems that the technique also is able to relieve stress-induced physical ailments as well (at least it did for me)! If people just try the technique in addition to whatever other treatment they are using, there is nothing to lose.
If applying the technique doesn't work the first time, keep trying for several times-- you are just using your fingers anyways, so it's all natural. For myself, I thank God that I purchased this book. Hope other people experience similar results. Cheers.