One of the main reasons I am so drawn to Hitchcock is that he planned his shots way in advance on story-boards, which he designed like classic paintings (he was an art connoisseur). It's why he found shooting on set boring - because he had already composed the film in his head.
I've learned to relax and be my present age and my present position. I feel comfortable on my mid-thirties. It doesn't seem such an alien place to be.