why would you get rejected? even if i get slapped i haven't been rejected - girl just has good game
there's no getting over it, it's just using the anxiety as a motivator. all you can do is approach. if you're worried about it then indirect is going to be best as it minimizes your risk.
what's your worst rejection yet? did they tie you down and burn you with coals, then cut your fingers off and put them into your anus? If they did then write a book (probably get somebody else to do the actual writing).