BY DALE CARNEGIE
Written over 80 years ago, this is a book that is as relative today as it was when it was first written. The principles are a broad mix of personal and professional advice based on the psychology of relationships. From making friends to succeeding in business, the principles outlined here serve as a proven guide for anyone who wants to build better relationships and get the most out of them.
PART ONE: FUNDAMENTAL TECHNIQUES IN HANDLING PEOPLE
Principle 1: Don't criticize, condemn, or complain.
Psychologists have proven that rewarding good behavior increases the chance that the behavior will continue. Criticizing bad habits only leads to resentment and makes effective communication almost impossible. It's important to understand that people are influenced by emotion, pride, and ego.
“Criticism is futile because it puts a person on the defensive and usually makes them strive to justify themselves.” — Dale Carnegie