HOW TO WIN FRIENDS AND INFLUENCE PEOPLE is one of the first bestselling self-help books ever published. Written by Dale Carnegie and first published in 1936, it has sold 15 million copies world-wide. In early 1920s, the Great Depression in U.S. economy dawned. Poverty and war robbed people of their happiness and desire for a better life. At this time DALE CARNEGIE developed a new educational method to apply sociological and psychological knowledge to discussion and analysis of human nature. Until now, this book is practical in our daily life. It includes: Fundamental Techniques in Handling people; Six Ways to Make people like you; How to Win People to Your Way of Thinking; Be a Leader: How to Change People without Giving Offense or Arousing Resentment, etc.《人性的弱点》是社交技巧的集大成者，自从1936年出版以来，已累计销售1500万册，绝对是最畅销的图书。 20世纪早期，美国经济陷入萧条，战争和贫困使人们失去了对生活的愿望，而卡耐基独辟蹊径地开创了一套新的教育方式，运用社会学和心理学知识，对人性进行了深刻的探讨和分析。直到现在这本书依然非常实用。《人性的弱点》主要内容包括：与人相处的基本技巧、平安快乐的要诀、如何使人喜欢你、如何赢得他人的赞同、如何更好地说服他人、让你的家庭生活幸福快乐等十篇。