Michael Fassbender is just a creative force: he finds authenticity in singularity with what he brings, and it's always authentic. He doesn't try to be creative and different for the sake of it.
I've worked with people who wanted to be creative every day: it was like a goal to arrive with something very special. Sometimes it's just disturbing, because special is good when it's needed. But when it's not needed, it's confusing, and you go away from the authenticity by a strong desire to be unique and singular.
You don't sleep anymore, but at the same time, you have this strength that comes from this life that has just arrived. It's a big cliche how your priorities change, but every parent knows that sometimes there's a thunderstorm, and you look at his eyes, and everything is all right. It is a revolution of everything you feel.