She loved performance and telling stories, but she had to reckon with the consequences of “winning the lottery,” as she calls getting the part of Hermione, when she was nine years old and literally still losing baby teeth. As an adult, “it dawned on me that this is what you’re really signing up for.”

The question most people ask when a celebrity moans about being famous: If you hate the fanfare so much, why keep making movies? Watson asked herself that all the time. “I’ve been doing this since I was 10 or 11, and I’ve often thought, I’m so wrong for this job because I’m too serious; I’m a pain in the ***; I’m difficult; I don’t fit,” she says. “But as I’ve got older, I’ve realized, No! Taking on those battles, the smaller ones and the bigger ones, is who I am.”

Sometimes, she’ll decline a photo but offer up an autograph or even a chat—“I’ll say, ‘I will sit here and answer every single Harry Potter fandom question you have but I just can’t do a picture’ ”—and much of the time people don’t bother. “I have to carefully pick and choose my moment to interact,” she says. “When am I a celebrity sighting versus when am I going to make someone’s freakin’ week? Children I don’t say no to, for example.”

“I have met fans that have my face tattooed on their body. I’ve met people who used the Harry Potter books to get through cancer. I don’t know how to explain it, but the Harry Potter phenomenon steps into a different zone. It crosses into obsession. A big part of me coming to terms with it was accepting that this is not your average circumstances.”