Cialdini's principles are defensive knowledge more than offensive knowledge

Reciprocity, commitment, social proof, authority, liking, scarcity. The book is usually read as a persuasion manual, which is the less valuable reading.

The more useful one is recognising these when they are being used on you. The free sample that creates obligation, the small commitment that makes the large one feel consistent, the artificial deadline. Naming the mechanism is most of the defence.

Worth noting that some of the underlying literature has faced replication scrutiny, as with much of social psychology from that era. The core principles have held better than the specific effect sizes.

Which of the six do you notice most often being run on you, and did noticing it actually change what you did?