Greed will make you looser therefore most of the people are not thankful for what they have and struggle to make more money and in so many cases greedy people get excited after a big win so they utilize that big in gambling to make double of this sum but all remain useless after a single loss.
Those who are always thankful for their earned money will not be trapped into the wrong decision and they often stop to gamble when they win a good amount and such people skip their greed in order to be successful in future and enjoy the already earned sum.
Greed works as a bitter lesson for those who aren't thankful for what they have already earned and for those who are immediatist. That is the concept of achieving a whole life's prosperity in a single day. Greedy people think everything has to be conquered instantly, and the more they get, more they want in faster and faster dosages. It's hard to make these people change their minds just with words and advices. It really seems they have to lose in order to understand what life is about and how it works for real.
It's not wrong to pursue prosperity and a progressive line of achievements in life. However, it has to be done responsively step by step, understanding time is also a very important factor on this journey which can't be neglected or cheated.