I think it's necessary to identify with anything - with any character you play, there's got to be something in common, so you can link up to that person, even if it's like one tiny thing. But it's equally fun to play somebody completely different, and trying to find what that thing is to make it.
“What do you want to get done? In what order of importance? Over what period of time? What is the time available? What is the best strategy for application of time to projects for the most effective results?”