When nothing else works, try this summary by Dale Carnegie in the book how to influence friends

The book "How to Win Friends and Influence People" by Dale Carnegie doesn't have a specific summary titled "When nothing else works, try this". However, the book is filled with timeless advice on how to interact with people effectively. Some key points include showing genuine interest in others, remembering people's names, encouraging others to talk about themselves, and making the other person feel important. These principles can be applied when other methods of influence or persuasion seem to fail.