Art mindset vs. business mindset

I recently took a buyout from my previous business (a marketing agency) and am using the time and funds to launch my career as an artist.

I’ve been creating art as a personal passion for years, and now that I’m shifting it to bring in real income, I keep having this nagging thought that the business mindset required to make art a career is at odds with my artistic/creative mindset. I feel like I’m battling myself and making things harder than they need to be.

I want to reconcile these worlds to lend each other momentum instead of creating friction. How can I shift my thinking?