Having a growth mindset means taking on challenges, and even thriving when placed in challenging situations. It means not seeing failure as indicative of a lack of intelligence, but instead a springboard for potential success.
An example of a child with a growth mindset is one who chooses to do a complicated puzzle, knowing that completing it will be rewarding. Someone with a fixed mindset, on the other hand, would choose a simple puzzle, which gives him a greater chance of succeeding.
Parents who teach kids to adapt a growth mindset gear them up for success. So, instead of telling your child that he is intelligent, commend him for his hard work and encourage him to take the challenge one step higher.