Scars
The people you manage have scars that you can’t see.
I’ll use my son as an example who is enthusiastic to start a new part-time job. He took training, met one coworker in particular who he enjoyed speaking with, and set up the start date. Since the job came in and out of the blue, he was very clear that he would not be able to start sooner than that date because he had a house guest from another part of the country.