For young people to achieve a steep growth trajectory, they really need to repeatedly ponder what first principles truly mean.
At this moment, the understanding should include: 1. Accepting that all professionals make mistakes, and that most problems that seem unsolvable in experience have solutions. 2. Accepting that no matter what you do, there's no excuse for being worse than any professional; if you're currently lacking, then strive to be better than others as soon as possible.
Mindset determines the future.