Sorting out needs vs. wants? Haves vs. have nots? Trying to figure out when it is okay to spend money on something that you do not ‘need’ [i.e., food, clean water, basic clothing, shelter]?
This is the rule of thumb that was given to me by God and has been incredibly helpful to me: Spend money on that which feeds your soul.
That is different for each person, so maintain it as your guiding principle when purchasing for yourself and for others. When you give to charity, too.