Yes! I Am Greedy

Why people always being greedy and will not satisfy with what they have but keep looking for something they might not able to get it? I'm not talking about other people but myself. I know I am very greedy person; the worst is I do not know how to control myself not to be greedy. I will I can get greedy treatment just like people who are drug addicted get the drug treatment. I want to recovery like them too. Anyone can tell me where to find such greedy treatment?