What is the one key to Persuasion?

What is the one key to Persuasion?

There are a lot of good tips on Persuasion but one stands out as thinking about creating a feeling of ANTICIPATION and belief that the person will be much better off. If you can do this, the likelihood of success increases significantly. If you don’t agree, then, remember what persuaded you the last time someone convinced you to do something you flatly refused to do. Does this make any sense?