Wow, I have had some seriously crappy bosses over the years. I had notes about some of these bosses because someday I may turn these notes into a work of fiction.
For now, you can figure out what not to do in your new leadership role from this book. Being a supervisor, manager, director, or whatever is not free license to be the Mayor of JackAssville. Micromanaging, taking credit for the work of others, and being a horrible human in general: these are not good leadership traits.