This article called "Personal Best," in the New Yorker was sent to me by a friend and strength coach. It's a bit long, 15 min read, but well worth it. It talks about how top level performers from athletes to musicians have coaches and ask the question why not you and why not me.
Often times, when school or professional training is done, you're done with having someone tell you what worked or needs working on. Whether you are a teacher, doctor or a councilor, this article paints a poignant picture how we keep getting better with the use of a coach.