Practice makes perfect?

The thing about perfectionism is that is disguises itself as a virtue. […] They wear their perfectionism like a badge of honor, as if it signals high tastes and exquisite standards.

Big Magic (Elizabeth Gilbert)

Our stereotypical formula, ‘practice makes perfect’ carries with it some subtle and serious problems. We think of practice as an activity done in a special context to prepare for performance or the “real thing”. But if we split practice from the real thing, neither one of them will be very real.

Free Play: Improvisation in Life and Art (Stephen Nachmanovitch)