Well and actually rich or poor a person or a family they still have to manage all the costs of life. Rules are something that must be applied in any case, because if not then we will behave arbitrarily in using it. Moreover, this is a matter of money, if they are people who have more income than other people in general they must also still have some rules by applying budget limits, because otherwise the money they have will not last long. We are living human beings who always want whatever we think is attractive and also we always have greed in us. Not buying something that we don't really need is a very good choice, it's better to save some of the money we have for other purposes, we never know that we could experience something that cannot be predicted and at that time we will need money urgently.
Saving on expenses would be better and only buying something that we really need and can provide good feedback for us would be better.
Yes, people who have more than many others also need to stick to some rules, but I believe these rules are about making more money than about spending less. Limiting your desires will not save the money you have. Your emotional state will suffer and you will be focused on the fact that you are missing something. And in order to save and multiply funds, you need to be focused on how it can be done, and for this you need to be motivated. And what motivates better than one's own desires?
Or this one;
3. Break down luxury expensesYou would really be able to save yourself on total wreckage because of unwise spending due to those luxury expenses. This is only good if you do really have that extra but if you are really just that earning
sufficient then it would be a bad idea if you do really let yourself having this kind of behavior. Sooner or later you would really be able to find out yourself on big trouble on the time that you had realized
that you had already spend your life savings which is something that must kept and be used on emergencies or important matters and not on buying up useless things or craps.
This is where people do usually misses out on which making on doing things which arent supposed to be done because if you do then you would really be ending up on a disaster but well there are people
who doesnt bother or care about those consequences or effects until they would be able to realize those mistakes. Common behavior of human being is that whenever they do want a thing then they would
definitely do and dont care nor mind about the after effects.