After a whirlwind of public spotlight during her "Twilight" years, Kristen Stewart says that at age 25 she takes pride in being "able to move forward and not fall into every mental crater. That's a new thing for me. Age has made me smarter and calmer."

In an interview in the August issue of Marie Claire, the actress reflects that, "Speaking very candidly, it was a really traumatic period in my early 20s that kick-started something in me that was a bit more feral."

In contrast, "Between ages 15 and 20, it was really intense. I was constantly anxious. I was kind of a control freak. If I didn't know how something was going to turn out, I would make myself ill, or just be locked up or inhibited in a way that was really debilitating."