This here. Not everyone can do that. I personally can. I try to teach my friends and family to save a bit and use credit cards as a tool to get a small bit of free stuff. However, those things are deadly if you have no skill in saving in the first place. They will wipe you out with interest payments and then some. That method only works if you have the ability to save first and put off impulse buys. Even having something simple like a checking account can be bad if you have poor ability to balance your budget.

My wife for example does not have this ability, however I can manage it by basically controlling the amounts we have and putting restrictions on how money is spent that teach the lessons of saving that her parents for some unknown reason skipped teaching her. Lessons like 'you have X amount of cash lets save up for that thing you want' 'lets review our purchases and see if they make sense on the amount of income we have' 'yes, your friend has a need of 100 bucks and we can cover it but will giving them 100 just make them ask next time for 1000 and will it actually fix their problem or delay it?'