2. If you don't know something, admit it. Never try and pretend you know something you don't.
3. Complaints are GOLD. If a student has a complaint or concern, treat it as such. For every student that has a serious complaint about your dojo, the teaching, whatever, there are 10 other students who are thinking it and don't have the guts to say it.
4. You are not the grand dispenser of knowledge. Any good instructor is nothing more than a senior STUDENT.
GM Jerry Fontanez sure knows what he's talking about, I think he speaks from experience.
I would say that don't turn your school into a money making machine and let that be your main driver.
1. Listen to your students
2. Pay attention to students. Example worst case scenario: A student is having trouble, thinking about leaving and the owner does not care simply because he knows he can get more students. Is that fair for the student? Is that a way to run a Karate school?