"How to Win Friends and Influence People" is one of the most successful books ever published. It's full of practical ideas and insights you can use in work and life. Here's a brief, no-fluff summary of the most important and actionable ideas in the book: Techniques in Handling People 1. Don't criticize, condemn, or complain. 2. Give honest and sincere appreciation. 3. Arouse in the o...