Focus on the mind and the soul. Read. Study. Enrol in a course of lectures. Pray. Become a member of a religious congregation. Study the Bible or other ancient works of wisdom.
I give lectures for money but all the money goes to charity. So I make no money from it.
I delivered lectures and I was also a consultant for international companies in finance both private equity and big venture capital funds.
I read Freud's Introductory Lectures in Psychoanalysis in basically one sitting. I decided to enroll in medical school. It was almost like a conversion experience.
It is just called Continuing Legal Education. You can go to lectures you can even listen to tapes on airplanes - they want you to stay current. So you do have to stay current to maintain your license even if you are not practicing.
When I enrolled in college at age 19 I had a total of eight years of formal classroom education. As a result I was not comfortable with formal lectures and receiving regular homework assignments.