[Benjamin Zander, condustor of the Boston Philharmonic] told a story about a musician who was practicing a piece for an [audition] to be the associate (2nd chair?) cellist? (sorry, can't remember) in a Barcelona orchestra. Zander thought the guy was holding back - he kept working with him until the guy was giving it all he had and the guy went away to Spain for the [audition]. He came back and said he hadn't gotten the job because he played the first way, holding back. But then he said, "oh, fuck it" and went to Madrid, auditioned for 1st chair in their orchestra and got it. So Zander says that you have to get BTFI - Beyond the "fuck it" point.
I liked her blogger bio, too, where she described herself as "thinking hard and wearing lipgloss."