If you make a big ask, you might just get a big yes.
How many times have you considered an ask of someone and immediately tossed it aside because it seemed like an impossibility? This could be as scary as asking someone on a date, or as terrifying as asking a TEDx organizer to speak on their stage. What could be the worst thing that would happen? You might get a no. But what if you make the big ask and you get a big yes?