This book focuses on the Zen path of freeing the mind through dhyana or meditation. While the word meditation has its root in a Greek word that means 'to think', actual meditation, says Osho, lies in developing the ability to stop thinking, to clear the mind of all thoughts. He points out that the mind is the barrier to true happiness, with its conflicting thoughts and emotions. So, to clear the mind and keep it quiet is the key to achieve bliss. Each chapter in the book contains an anecdote, question or a small story that emphasizes an important point or teaches a lesson. The phrase Dang Dang Doko Dang is symbolic of the sound of the drum that a Zen master beats in order to get the attention of the students before teaching an important lesson. Zen: Dang Dang Doko Dang teaches many meditation techniques and answers a lot of questions about Zen meditation. As Osho puts it, Zen is concerned with dissolving philosophical problems, not answering or solving them.