If you are an artist, you are probably a visual learner. That means you have to listen to your eye. Not your head. Art is not an analytical or theoretical subject.
Many people will read, study lectures, debate, and analyze. But in the end it's how you learn to see.
Use the books, lectures etc as GUIDES.
Art is relatively simple, once you stop over analyzing it.
"If one advances confidently in the direction of
his dreams, and endeavors to live the life he
has imagined, he will meet with a success
unexpected in common hours."
- H.D. Thoreau