Dale Carnegie's principles for building real influence

Open a browser and check your social media feed. Notice how many posts are complaints about something. Now notice how rarely those posts change anyone's mind. That's the problem Carnegie opens the book with.

Don't criticise, condemn, or complain. This is the hardest principle in the book, because criticism is our default. Carnegie argued that it puts people on the defensive and makes them strive to justify themselves — it rarely produces the change you want.

B.F. Skinner's work proved the same point experimentally: animals rewarded for good behaviour learn faster and retain better than animals punished for bad behaviour. Criticism is the human version of the same mistake.

That doesn't mean you never address problems. It means you stop leading with blame. When you feel the urge to point out someone's fault, pause and ask: 'Will this make things better, or just make me feel right for a moment?'