Found this in some notes I had taken while reading the Duggers' most recent book.
From page 168 of A Love That Multiplies:
"Mentoring a child isn't the fastest way to get it done. It's almost always easier to do it ourselves, but that doesn't provide the valuable teaching we want our children to experience. It comes back to that perfectionist mindset. Parents need to realize that it's almost always more important for the child to learn something than it is for that task to be completed perfectly. It's a little hard for some parents to get past that attitude, but if all your child does is watch you do something, he or she is probably not going to learn how to do it successfully."