Failure is not the opposite of success, it is part of it. Every skill your child will ever be proud of sits on a pile of attempts that did not work. The question is not how to protect kids from failing, it is how to make failure safe enough to learn from.
Resist the rescue
When a project is forgotten or a tryout goes badly, the instinct to fix it is love, but rescuing sends a quieter message: I do not think you can handle this. Let the small failures land while the stakes are small. That is where grit is actually built.
Praise the process
Swap, you are so smart, for, I saw how you kept going. Kids praised for effort choose harder challenges. Kids praised for talent start protecting the label.
Tell your own stories
Your child should know what you failed at, and what happened next. A parent who only appears successful teaches a child that struggle is shameful. A parent who says, my first try went nowhere, here is what I did, teaches that struggle is normal traffic on the road.
Steady beats perfect
Resilient kids are not the ones who never fall apart. They are the ones who know an adult will still be steady when they do. Your calm after their failure is the lesson. The grade, the game, the audition, those are just the setting.