I really enjoyed this interview with Mikkelsen, and I particularly liked this mentality:
My approach to what I do in my job — and it might even be the approach to my life — is that everything I do is the most important thing I do. Whether it's a play or the next film. It is the most important thing. I know it's not going to be the most important thing, and it might not be close to being the best, but I have to make it the most important thing. That means I will be ambitious with my job and not with my career. That's a very big difference, because if I'm ambitious with my career, everything I do now is just stepping-stones leading to something — a goal I might never reach, and so everything will be disappointing. But if I make everything important, then eventually it will become a career. Big or small, we don't know. But at least everything was important.
This post on Futility Closet directed me to a 2014 blog post on the WSJ (paywalled) which discusses the 'Hawking Index.' Which is tracking the highlighted passages as a means to judge how far books are read before being abandoned. An interesting idea as a way to make measurements based on the information Amazon makes public (because they know the actual answer to this.)