I did experience the 'greed' concept and I didn't like the results! So, I chopped up the 2 credit cards, made a plan to pay them off and had a lot less stress just keeping my greedy wants at bay, so to speak:)

Sure, there are times of 'emergency' .......so you borrow on an agreed and affordable repayment plan....or start saving for future emergencies-takes a LOT of discipline btw to do this .

I well remember what my Dad told me, many years ago 

".....it's not how much money you make/get/have that matters but HOW you spend it."

I try to practise this. 

Had a boss many years ago who told me that HIS boss told him that money is nothing but what you can buy with it as this is where the value is.....and NEVER think of money as anything but 'units' then when you plan how you will spend your money you will not get distracted by emotion.

He also passed on that every pay you should use %'s to divvie up and budget for bills, spendings on self and others and savings both short and long term.

I practise this.