At 35, I'm definitely starting to feel more like a grown-up than I ever have. There's nothing in my life that is childish or whimsical. Having fun is fantastic and I never want to lose a sense of that - and also, I think, you have to have that to put into your work or else it's going to feel stiff.
In Hollywood you always feel a bit like a hake. The publicists march people up and down in front of you and they interview you... You feel like the turbot and the sea-bream go by, and you're the hake.
It is of course the nature of historical contraction that the shortest distance to a historical destination is never a straight line.