A tough boss teaches you what kind of boss you’ll never be. File that lesson.

Working for someone difficult hands you a detailed education you did not ask for: how it feels to be spoken to that way, which habits make a shift unbearable, what a small kindness would have cost them. Most people spend it all on resentment and lose the detail. The specifics are the valuable part and they fade. Years from now you will be the one setting the tone somewhere.

Write down the three things that bother you most about how you have been managed, and keep the note. When you are eventually running a shift or a group, read it. Meanwhile, practise the opposite on whoever is newest.