Growth mindset is just replying to yourself with “skill issue” every time something goes wrong
When people believe their basic qualities can be developed, failures may still hurt, but failures don’t define them.
Carol S. Dweck • Mindset: The New Psychology of Success
Growth Mindset vs Fixed Mindset — “Those with a ‘fixed mindset’ believe that abilities are mostly innate and interpret failure as the lack of necessary basic abilities, while those with a ‘growth mindset’ believe that they can acquire any given ability provided they invest effort or study.”
Gabriel Weinberg • Mental Models I Find Repeatedly Useful
Even in the growth mindset, failure can be a painful experience. But it doesn’t define you. It’s a problem to be faced, dealt with, and learned from.
Carol S. Dweck • Mindset: The New Psychology of Success

In short, when people believe in fixed traits, they are always in danger of being measured by a failure. It can define them in a permanent way. Smart or talented as they may be, this mindset seems to rob them of their coping resources.