Massa just gave an interview on TV.
They asked if he still feels the pain because of 2008's last race (all that things with Hamilton, Glock and Vettel on the final laps, when he lost the title by one point), and he said that he doesn't feel that much, because he didn't lose the title specifically on that race, but races before.
When asked about his recent lack of performance and if it was due the accident back in 2009, he said that he went to a lot of doctors to see if there was something wrong with his brain, but they always said that there was nothing wrong, that everything was fine, etc. Felipe said that he never felt that he was a worse driver than he was before. His improvement through this year he says it was because he changed the car more for his driving style, and because he's in therapy in the last few months. He said that all the bashing, all the people putting other drivers on his seat for 2013 or even in the middle of 2012 was affecting him. When facing the possibility of Ferrari not signing him for 2013, he said: you know what? Whatever happens, I'm gonna have fun from now on. And that's why he says that he is doing well now, because he's happy again, and feeling himself over all that stuff.