Pitch your app to everyone who will listen. What do you have to lose right? Yes, fear of rejection... No matter how often we repeat: "WHAT DO YOU HAVE TO LOSE"

Pitch your app to everyone who will listen. What do you have to lose right? Yes, fear of rejection... No matter how often we repeat: "WHAT DO YOU HAVE TO LOSE". Still. People are scared of selling. It seems that a rational argument doesn't work. Does anyone have a more emotional argument that would convince an otherwise shy geek to start selling?