>>> The first thing I did when I became a professor was write up an expectations document, and when students want to join my lab I walk them through it, and even then we do a trial run if they still want to.

A relative of mine got his PhD with a prof who was kind of famous for such a document, and all of his students continued that tradition in their own labs. Of course you know the drill. Part of it is to influence your students, but the other part is to influence yourself.