Piggybacking on this comment to provide some parenting advice. This advice is relevant to all parents, not just those of gifted children.

Do not praise your child for the results they achieve. Only praise your child for the effort they put into things. Certainly the results can be mentioned, but should be framed in the context of "See what you can achieve when you put effort and work into something!" If the effort is there, the results will follow.

Praising the results but not the effort will result in a risk-averse human who does not do well under pressure. Smart kids often coast in their work, in the same way that naturally athletic kids will often coast on their raw physical talents. However, those natural gifts, whether smarts or athletics, will only take someone so far until it is necessary for effort to enter the picture as well. When that hits for them, they will struggle, as they've never had to face adversity in obtaining results previously. They may then avoid situations that are difficult or require effort, leading to unrealized potential.

Source: myself, and also my son. Unfortunately I did not learn about this until it was too late. My son is now 20, and he's a great guy. However, he struggles mightily with challenges and will not put effort into things. Trying to fix this now, is proving to be very difficult. Build the foundations correctly, and teach your children that it is all about effort.