Quotes from Robert Cialdini

The obligation to receive reduces our ability to choose whom we wish to be indebted to and puts that power in the hands of others.

Embarrassment is a villain to be crushed.

The truly gifted negotiator, then, is one whose initial position is exaggerated enough to allow for a series of concessions that will yield a desirable final offer from the opponent, yet is not so outlandish as to be seen as illegitimate from the start.

Presuasion is what you say immediately before you deliver your message that leverages your success tremendously.