كتاب نظرية الفستق

The book The Pistachio Theory, part one and the second part, is complete and free of charge, by the writer Fahd Amer Al-Ahmadi. The book The Pistachio Theory is considered one of the most popular and readable books, as the book was able to gather in it many skills that will change your life for the better.
Among the most important skills mentioned in the pistachio theory book are:
Self development
NLP
Positive thinking