It depends on how you manage your money and if you are satisfied with what you have. Because if you are not satisfied with what you have then everytime you see something you like the result will always be the same. But if you are satisfied with what you have now then you wouldn't be tempted in buying those things. Try to scribble down what are the things you want and need, want are things you just want to have because other people have it too; need would be things you need everyday and you can't do by without them because they are that important.