This is the true danger of wealth--it often consumes the people who have it even more than the people who seek it. I remember reading a book on poverty that explained why people were so willing to give the little they had to those who asked. To many of the poor, money is such an ephemeral thing that they would rather make others happy even for a little bit than concern themselves with accumulating it. Meanwhile, the wealthy are often so absorbed with keeping (or increasing) what they have that they miss out on the joys of life and the benefits of helping others. Instead, they are in a perpetual state of jealousy (fear of losing what one has) that infects all of their relationships.
But this does not have to be just wealth; it can be any sort of obsession, anything that we hold on to tighter out of fear of losing it, anything that we are afraid to share with others. For me, it is often time. I am often so afraid of the time that I am losing that I lose time in my worries about it, or I don't start things because I'm afraid I won't have time to finish them. Instead, I fill small moments of time with pointless thoughts or activities. I need to learn how to give that time up to God and allow Him to guide me to the activities and events that truly matter.