What I mean is that those thoughts, they're human. And just because you turn out differently than everyone's imagined you would doesn't mean that you've failed in some way. A kid who gets teased in one school might move to a different one, and be the most popular girl there, just because no one has any other expectations of her. Or a person who goes to med school because his entire family is full of doctors might find out that what he really wants to be is an artist instead.
Jodi Picoult (2009). “My Sister's Keeper - Movie Tie-In: A Novel”, p.354, Simon and Schuster