Before you buy anything, ask yourself two questions. One: do I really need this? And two: could I put this purchase off another week, month, year? If you're honest with yourself, you'll be surprised at how many purchases you can delay or avoid altogether; even better, how much money you can save. And you'll realize how perfectly well you can get along with what you already have.
A pity thing for us is we have too many desires, but we can't control them effectively, so we become slaves of our desires. We are always struggling with our desires and we will never be free men. This is our limitation, few of us can avoid.
Now I have realized this, so I will try my best to be a free man without confusion of all kinds of desires.