If we understood that there is a system for all the things that manifest in our lives and that everything is here to teach us and to bring us to a place where we can complete our correction, then we would never worry. We would know that God put us in this framework, in this body, and in this environment to be in the best position to finish our correction.
The circumstances in which we find ourselves are not meant as punishments; they are tools to help us elevate to another level of spiritual consciousness. If we truly understood this, then there would be no greed, anger, or envy because we would know that we are always exactly where we need to be.