How we view struggle has a great deal to do with our happiness. If we see struggle as a natural part of the learning process, we are more likely to embrace it. We will carry on through difficulty and achieve success in school, in work, and everywhere else. On the other hand, if struggle represents weakness, a lack of intelligence, or some other negative trait that we believe we have, it will have unhealthy impacts.
We should teach our kids to consider struggle as an opportunity to reach our potential. It makes us stronger as people and drives us to greater accomplishments. Perhaps we can learn from Japan. Here's a report discussing how the Japanese view struggle. I found this perspective fascinating, and I included it in my book.