Answer and Explanation:
The phrase said by Duke Ellington means that problems are desperate situations, which cause people to explore what they have inside themselves to get rid of them, that is, it is in the difficulties that people discover what is good, their strengths and talents.
The proof of this, can be seen in different moments of our society, because we can see that it is in moments of economic problems that people discover that they can be entrepreneurs, it is in moments of political and social contradictions that people discover that they are artists, it is in times of health problems that people discover are resilient and so on. From this form, we understand that despair and difficulty, leads to discovery and discovery.