Some people, at first a myth, later became a joke; Some people, at first a joke, later became a myth. What does this mean?

In other words, some people have a high talent at first, and others can't reach it. Later, they don't work hard, and gradually their talent naturally disappears. They become ordinary people and are naturally laughed at by others.

Some people, with poor talent at first, were laughed at by others, but after unremitting efforts, they finally achieved a career and reached a height that others could not reach, which became a myth.

Hope to adopt. Oh, thank you.