You cannot change Joe Biden. But you can change yourself.

Robert Kiyosaki

As far as I understand, this citation is about the following. When something bad happens, it is senseless to be angry on someone or somebody. Especially if this somebody is a powerful institution. It is like to be angry on tsunami or volcano. Instead, we should think how can we change ourselves. Tsunami is a teacher and we are students. It is up to us whether to take a lesson or not.