If I were a young coach today, I would be extremely careful in selecting assistants.
Mistakes come from doing, but so does success.
You cannot antagonize and be a positive influence, and you will antagonize when you discipline through emotion.
Discipline yourself so others won't have to.
I'd rather have a lot of talent and a little experience than a lot of experience and a little talent.
Many leaders don't listen, and it is one of the greatest methods we have of learning. You need to listen to those under your supervision and to those who are above you.