Here is Mike Wallace, who is visible to the public, and I have been watching him since the early '50s. Smoking up a storm and insulting his guests and being absolutely wonderfully evil and charming too.
Not the challenges necessarily, but the way in which you get ready because your technique has improved over the years and you perhaps know how to be more economical than perhaps you used to be when you tried to work perhaps too hard.
In Stratford you either turn into an alcoholic or you better write.