I am like you. Recently, I was given the advice (by someone who the advice was working for well) to hire a business manager. You do what you are good at (producing content, conducting research, giving workshops & lectures) and they manage the business. You need to be able to trust them, but assuming you can find somebody like that and afford to pay them, it makes a lot of sense. Perhaps there should be an app for that (outsourced business management??).

Best of luck to you :)