If you get into a really serious predicament with your gifted child’s perfectionism where he insists that an activity is not worth doing because he can’t do it well enough—and you can’t argue him out of it—remember that you may not be as stymied as you think.
Count on his drive for that subject. Play tricks.
If it’s music, play recordings. Leave biographies of famous musicians casually lying around. If it’s math, do some problems just for your own fun, and be sure to ask him for help if you get stuck. If it’s writing, read funny or interesting stories, poems, or essays, sharing the best parts out loud.
It may take some time, but sooner or later your child will probably resume that well-loved activity, perhaps even with renewed dedication and commitment.