be born that way
To be naturally inclined to be or behave in a certain way. I've never been a very patient person—I just wasn't born that way, I guess.
ˈbe/be ˈborn/be ˈmade that way
(of a person) behave or do things in a particular manner because it is part of your character: It’s not his fault he’s so shy — he was born that way.