Questions for Jo #1

Not that I'd ever get the chance, but I think every fan wishes they could ask Jo questions about the books. Here is one of mine. My favorite scene is still from the 12th chapter of Philosopher's Stone -- when Harry first experiences the loving gazes of his family in the Mirror of Erised. Aside from knowledge of how the mirror works, did seeing his family change to Harry's perception of himself? Would he act/react any differently if he hadn't viewed his parents?