It is very important we know what we really need and what we want. The fact that everyone has it does not mean we must have it too. People quickly run out of money not because they don't receive what is enough but it is because they spend a lot on irrelevant things.
We need to always put things in order of priority, how important and urgent is what I want to get? How does it help me to survive, what will having it save me from. There are many questions we need to ask ourselves before we jump into spending the little resources we have.