From an article by Corinna Da Fonseca-Wollheim, published in the Wall Street Journal 9/29/11:
Performance psychologists are invited into music departments nation-wide, as educators recognize the need to prepare musicians for the competitive, high-stakes world of classical music. In the past, performance anxiety was rarely discussed; if anything, it was seen as a Darwinian way of separating those fit for a solo career from those doomed to teach. Today, performance psychologists advertise their services as coaches, not shrinks, providing musicians the same concrete tools and drills offered athletes and CEOs.
Fear is not the problem: If you want to do well, you will probably experience fear. [The newer approach] is to build up the mental skills needed in a performance, like courage, trust and a focus on higher-order qualities: artistry and expression for musicians, strategy for athletes. Much of this involves [mental training] ... In addition, [performance psychologists coax] teachers and musicians to incorporate performance-like play time into each practice session and lesson.
Read the full article here.