A famous saying inspired me, for example, "the sword front is sharpened, and the plum blossom fragrance cries cold." There should be concrete examples.
Too many successful people will experience ups and downs in one way or another when they are young, and then we will all use them to comment, and the often used sentence is like this: "The sword edge comes from sharpening, and the plum blossom fragrance comes from bitter cold."
As for specific examples, you can list them yourself!