There is an old saying that asks you never to peg the needle on your spending meter. There are a few things that you need to ask yourself when you try to buy something that is bigger, flashier, or newer. Why do you want it? Would it make you happier? Would it give you the status that you are looking for? Would you derive a sense of self-worth from it, the like of which you did not have before? You may not know this, but in the long run, you could be happier that you kept your money in the bank and never indulged in any expense that was unnecessary.
You should only spend if you have a genuine need to do so. It is best to be conservative when it comes to spending habits. You should do this even if your salary increases or you inherit wealth or property from somewhere else.