You should never feel comfortable. There is something wrong if you are. You should always feel under threat, on the edge of your seat and pushing yourself. Win one and you want to win more. It`s never-ending.
Winter testing is essential but there comes a point where you have had enough of all the rehearsals and the pretend racing. You just want to get down to the real action.
There are a lot of factors in the life of an F1 driver which can combine to make you believe that you are somehow above normality. I think that is a mistake to start believing that. But, at the same time, it is important to be confident.