Martial Arts are Recession Proof

I accept money for teaching.  I make a living from teaching martial arts.  But my practice is unaffected by how much money I make.  My practice takes place outside the realm of money.  Neither being a billionaire nor being a pauper would effect my practice.

Of course, if I were a billionaire I could practice in my own private walled garden instead of my own private (because no one else is there at 6 AM) park which used to be a quarry.  And if I had so little money that I was actually hungry from not eating the night before, it might have some effect, but it still wouldn't change the content or meaning of my practice.

And by the way, there is a Daoist precept against being extremely rich or poor.