I think the idea, first and foremost, is to understand that people may label these characters as villains, but at the end of the day I have to fall in love with the characters that I play. For me, they have to be real characters with real objectives, and driving forces. So they're all different.
As you age, you have this vast cauldron of experience to draw from. Some of the experiences are great; some of them you wish you'd never had. But all of them shape the work that you do and the person you become. It's just inevitable.