This book presents life skills in an easy and concise manner, and in a way that prevents you from reading large and many books in development and development, many development books focus on a specific skill, but there is no comprehensive book in the Arabic library for all the skills required for success and prosperity in the twenty-first century. The style of the book is practical and concise, and all of it is effective and proven steps on how to acquire more than 70 skills divided into personal skills, communication skills, and interpersonal skills. In the book, you'll find important titles, such as How did you change a habit? And how to criticize without being injured? And how to give a speech without fear? At the end of each heading, a table of how to acquire the skill in three specific steps is placed. I deliberately made this reference small so that you can carry it and read it at home, at work, or on an airplane. The book is an important and useful reference for anyone who wants to develop themselves, and a comprehensive guide for those who want to train others in important life skills.