Stone has been struggling with panic attacks over the last few years, and only recently got her anxiety under control after finding several outlets for her nervous energy - such as baking.
But when the 23 year old began shooting Easy A in 2010, things were much different and she crumbled under the pressure of being a lead star.
She tells Interview magazine, "I was a wreck during that. I didn't sleep much. I remember the day I wrapped Easy A. Getting into the car as the sun was coming up because it had been a night shoot... It felt like a house had been lifted off of me. I felt a great deal of pressure making that movie, because in my personal life at the time, too, things were just... It was like a hurricane.
"That movie was such a crazy experience for me, and it was no one's fault but my own. There was no place to hide - ever. There was never a moment when I could shut out everything. I had to be accountable, and that's a great gift, but at that time, I think I was just terrified of that pressure... I've still never seen it."