Kristen Stewart is featured on the cover of The New York Times' T Magazine , and talks about a lot of things that has happened in her life, and more. Now 26, Stewart is sitting on her couch, dressed for the skate park in tight blue jeans, a loose white T-shirt and a black cap, worn backward. Cole (along with Bernie and Bear) sleeps at her feet. She lights a cigarette, her hands uncharacteristically steady. Everything about her, in fact — the easy eye contact, casual laughter and willingness to discuss the past — is a striking departure from the often frankly miserable face presented to the world just a few years ago. She talks about her work. During production, Stewart worked 18-hour days, six days a week, and when she wasn’t filming she was promoting her partnership with Chanel. “As a younger person, I would have lost steam: ‘I’m tired. I don’t feel good. I’m sick.’ Instead I tried to make myself more sick, more tired, just to see if there ever was a breaking poin