Despite the tremendous revolution in the world of informatics and that the world has become a small village, direct contact and personal impact are still of great importance in business and in life in general; and throughout this research (Handbook of negotiation) We will get to know about negotiation and its types and forms, then we will address the most important eight principles of negotiation, and we will talk about the most crucial skills that whoever needs negotiation in their work must have and work continuously on developing them, these two skills are: persuasion skill and reading body language skill, then we will give some tips acquired by practical experience and theoretical reading about what to do and what not to do to reach the safe side.