Are all these phrases interchangeable as I think?
Examples:
I make a living out of my small business.
I make a living off of my small business.
a. I make a living off my small business.
I make a living from my small business.
I make a living by my small business.
I live off of my small business.
a. I live off my small business.
I live on my small business.
or maybe,
a. I live on my small business income.