Just The Way You Are

I've noticed that with some people the more immersed they become in a book the more their personality changes to reflect some aspect of the book.

For example I've noticed that if I read too much fantasy or science-fiction I am more apt to daydream or take on primitive chivalric actions.

I've noticed a friend becoming more austere and severe when she started to read Through the Narrow Gate, a book about Karen Armstrong's time as a nun.

But in some traditions they would say we become the things we are.