Mentoring and receiving mentoring is vitally important to an artists' career. I have had both sides in my long career.
For professional artists, I recommend a business mentor, not in the art industry. My best mentors have been lawyers, bankers, framers, accountants, PR experts, ranchers, farmers, and shop owners. Over the years I have had lots of help from the business community. Business people have a more realistic view of the day to day operation of businesses than artists do.
Another way to get mentorships are through business blogs, marketing blogs and podcasts. Many artists focus on art podcasts and blogs. I get the best help from business and marketing podcasts.
If you are starting out as an emerging artist, a studio art mentor and business mentor is vital for your career. I have mentored many budding artists. The frequent problem is that the mentee expects the mentor to do the work and give all advice. They expect the mentor to hold their hand and communicate frequently. That is the responsibility of the mentee. The mentee must ask the right questions and have a clear agenda for each meeting. The mentee must make the effort to utilize the knowledge regularly, understanding what information he/she needs. Mentors are not quick fix people. Using resources wisely will help your art career.
Learning is wonderful for country painters.......