The Explorer by Phoebe Alexander

Abby’s off to college and she can be anyone or anything she wants.
The problem is she feels like five or six different people all trapped in the same body. One Abby with her dad. One Abby with her mom. One with her sisters. One with her girlfriend. One with her friends.
Everyone wants a different version of her.
Until she meets them.
Gavin’s off to college and he can be anyone or anything he wants.
The problem is the voices in his head of all the people who’ve told him he doesn’t matter; he’s too small, too weak, too nerdy. Being a math genius is pointless if no one pays any attention to you.
No one expects him to rise to the occasion.
But rise he does.