Real Thought

When I first read this book, I felt that the author's thoughts coincided with mine. I could find many thoughts in his book. By the end, my good impression of the book dropped significantly. It was like a person who fell into the water and grabbed the last straw. He kept talking about his struggle. The whole article is about thoughts. What is thought? What is right and what is wrong? I think there is no standard answer. Everyone has his or her own answer. Regardless of whether it is right or wrong, at least for oneself, it is a perfect and correct answer. The book is very general. What is thought? What do you think it is? What is that?