You get the confidence because you have been successful in the past. And you were successful in the past because you worked your tail off to be as good as possible. Please, no emails about kids needing a life, about being well-balanced, etc. It is simply a statement of reality. And that will most definitely mean having to give up some things.
College softball recruiting is a game of musical chairs.
Seats ARE limited, and when the music starts to slow down, you'd better grab a seat or you may be out of the game. Every year, I work with kids who go to Top 10, D-I programs. And I work with lots of kids who don't. Life is often tough. Sometimes it really sucks.