Greed is this emotion that is never endless and will continue forever, desire leads to sorrow and the end of desire is the ned of sorrow. The more we want, the more our ego increases; if we don't get it, we are unhappy. These are endless cycles of desire and sorrow. If only we realize that we have everything in the world and we don't need it anymore.
Don't we feel the want when we see someone has something that we don't, and it's all about material possessions. It's never about noticing that we made mistakes in life or never did good deeds and the want to be a better person but we think that being big doesn't lie in the heart but in what we possess.